ClinicalTrials.gg
RecruitingNCT06183788AMENDSUpdated May 6, 2024

Antibody-mediated NMDA Receptor Encephalitis: Symptoms, Biomarkers, and Mechanisms of the Prolonged Recovery Stage

An interventional study of Remote cognitive rehabilitation program in Anti-NMDA Receptor Encephalitis, sponsored by Fundacion Clinic per a la Recerca Biomédica. Recruiting at 1 site in Spain. Open to participants aged 12 Years and older. Per ClinicalTrials.gov, last updated 2024-05-06.

Sponsored by Fundacion Clinic per a la Recerca Biomédica · Not applicable, Interventional, and Supportive care

From the registry’s dates

  • Primary completion was expected by Jan 2025, 1 year 10 months ago, but the record still lists the study as recruiting.
  • Registered 4 months after the study started (first participant enrolled Jan 2023, registered May 2023).
  • Started Jan 2023; still recruiting 3 years 9 months later.
Phase
Not applicable
Study type
Interventional
Enrollment
20
Allocation
Not applicable
Ages
12 Years and older
Sex
All
01

Study summary

The encephalitis mediated by antibodies against the NMDA receptor (NMDARe) predominantly affects young adults and children resulting in severe neurologic and psychiatric deficits. After overcoming the acute stage, patients are left with long-lasting behavioral, cognitive, and psychiatric alterations with important socio-family-economical implications. Here investigators postulate that a better knowledge of this stage will improve treatment decisions and outcome.

In Aim 1, the post-acute stage will be clinically characterized, tools to remotely follow cognitive, behavioral and psychiatric deficits will be provided, and the impact of cognitive rehabilitation will be assessed.

In Aim 2, biomarkers (autoimmune, inflammatory, neuronal injury) will be identified as signatures of the acute and post-acute stages.

In Aim 3, a mouse model of NMDARe will be used to determine the underlying mechanisms and treatment of the postacute stage.

02

Conditions studied

  • Anti-NMDA Receptor Encephalitis

Keywords

  • Cognitive Impairment
  • Encephalitis
  • Autoimmune
  • Cognitive rehabilitation
03

In context

Cognitive Dysfunction

3,872 studies on the registry are indexed under Cognitive Dysfunction; 1,119 are open to participants now.

This study's planned enrollment of 20 is below the median of 64 across 2,794 interventional studies indexed under Cognitive Dysfunction.

Browse Cognitive Dysfunction studies →

Lead sponsor

Fundacion Clinic per a la Recerca Biomédica is the lead sponsor of 64 studies on the registry; 27 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
12 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients ≥12 years old with NMDARe in the post-acute stage of the disease;
  • ≤6 months from hospital discharge (acute phase)

Exclusion criteria

Exclusion Criteria (one of the following):

  • Inability to obtain ;
  • inability to travel to the center.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Not applicable
Primary purpose
Supportive care
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
20 participants (estimated)

Study arms

  • Experimental
    Anti-NMDARe patients with remote cognitive rehabilitation

    Participants of a prospective cohort in post-acute phase of the Antibody-mediated NMDA Receptor Encephalitis that will received a behavioral treatment.

    Behavioral: Remote cognitive rehabilitation program

Interventions

  • BehavioralRemote cognitive rehabilitation program

    Remote cognitive rehabilitation program will be performed through an online validated platform (Guttmann NeuroPersonalTrainer: https://gnpt.es/) run by the psychologists team. This is a Sanitary Product with CE certification (Sanitary Product RPS/430/2014; International Patent \[PCT/ES2008/00677\]) and here will be used within its approved indications. The rehabilitation program will increase in difficulty and decrease in frequency during the first year of follow-up (V1-V3).

06

What researchers measure

Primary outcomes

  1. Age

    Age measured in years

    Time frame: 18 months

  2. Gender

    Male or female

    Time frame: 18 months

  3. Vision condition

    Studied by optometer

    Time frame: 18 months

  4. Handedness

    Right- or Left-handed

    Time frame: 18 months

  5. General medical history

    Description of the most important issues compiled in the general medical history of the participant

    Time frame: 18 months

  6. Allergies

    List of allergies of each participant

    Time frame: 18 months

  7. Symptoms related to NMDARe

    Detailed description of symptoms experienced before, during and after the post-acute phase of NMDARe.

    Time frame: 18 months

  8. Treatments

    All treatments in which the participant is being involved.

    Time frame: 18 months

  9. Functional status

    Functional status according to Modified Rankin Scale (mRS) Modified Rankin Scale: - Range: from 0 points (no symptoms) to 6 points (dead).

    Time frame: 18 months

  10. Intelligence Quotient

    Estimated through General Ability Index (GAI; from Weschler Adult Intelligence Scale - IV (WAIS-IV). This index is obtained through Verbal Comprehension Index (VCI) and Perceptual Reasoning Index (PRI). * Range of GAI: from 40 to 160. Higher is better. * Range of VCI: from 50 to 150. Higher is better. * Range of PRI: from 50 to 150. Higher is better. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  11. Verbal working memory

    Verbal Working Memory: Working Memory Index (WMI) from WAIS-IV. - Range of WMI: from 50 to 150. Higher is better. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  12. Phonological loop

    Assessed by Forward order span of Digit span subtest from WAIS-IV. - Range: from 0 to 9 Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  13. Visual working memory

    Visual Working Memory: Spatial location subtest from Weschler Memory Scale - IV (WMS-IV). - Range of Spatial Location subtest: from 0 to 32. Higher is better. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  14. Verbal learning

    Assessed by: Adults: España - Complutense Auditory-Verbal Learning Test (Test de Aprendizaje Verbal España - Complutense; TAVEC); or Infants: España - Complutense Auditory-Verbal Learning Test for Children (Test de Aprendizaje Verbal España - Complutense Infantil; TAVECI) - Total learning: range: from 0 to 80. Higher is better. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  15. Proactive interference verbal memory

    Assessed by: Adults: España - Complutense Auditory-Verbal Learning Test (Test de Aprendizaje Verbal España - Complutense; TAVEC); or Infants: España - Complutense Auditory-Verbal Learning Test for Children (Test de Aprendizaje Verbal España - Complutense Infantil; TAVECI) - Interference list: range: 0 to 15. Higher is better. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  16. Short-term verbal memory

    Assessed by: Adults: España - Complutense Auditory-Verbal Learning Test (Test de Aprendizaje Verbal España - Complutense; TAVEC); or Infants: España - Complutense Auditory-Verbal Learning Test for Children (Test de Aprendizaje Verbal España - Complutense Infantil; TAVECI) - Short-term memory free recall: range: 0 to 15. Higher is better. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  17. Long-term verbal memory

    Assessed by: Adults: España - Complutense Auditory-Verbal Learning Test (Test de Aprendizaje Verbal España - Complutense; TAVEC); or Infants: España - Complutense Auditory-Verbal Learning Test for Children (Test de Aprendizaje Verbal España - Complutense Infantil; TAVECI) - Long-term memory free recall: range: 0 to 15. Higher is better. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  18. Verbal recognition memory

    Assessed by: Adults: España - Complutense Auditory-Verbal Learning Test (Test de Aprendizaje Verbal España - Complutense; TAVEC); or Infants: España - Complutense Auditory-Verbal Learning Test for Children (Test de Aprendizaje Verbal España - Complutense Infantil; TAVECI) - Word-list Recognition: range: 0 to 15. Higher is better. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  19. Verbal discrimination memory

    Assessed by: Adults: España - Complutense Auditory-Verbal Learning Test (Test de Aprendizaje Verbal España - Complutense; TAVEC); or Infants: España - Complutense Auditory-Verbal Learning Test for Children (Test de Aprendizaje Verbal España - Complutense Infantil; TAVECI) - Discrimination index of word-list: False positives + omissions of recognition between 44 total words to recognize. Higher is better. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  20. Verbal retention memory

    Assessed by: Adults: España - Complutense Auditory-Verbal Learning Test (Test de Aprendizaje Verbal España - Complutense; TAVEC); or Infants: España - Complutense Auditory-Verbal Learning Test for Children (Test de Aprendizaje Verbal España - Complutense Infantil; TAVECI) - Retention index: percentatge of Long-term memory free recall between Short-term memory free recall. Higher is better. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  21. Immediate visual memory

    Assessed by: Brief Visuospatial Memory Test - Revised (BVMT-R) - Immediate visual memory: range: from 0 to 36. Higher is better. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  22. Delayed visual memory

    Assessed by: Brief Visuospatial Memory Test - Revised (BVMT-R) - Delayed visual memory: range: from 0 to 12. Higher is better. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  23. Visual retention memory

    Assessed by: Brief Visuospatial Memory Test - Revised (BVMT-R) - Retention index: percentatge of Long-term memory free recall between the Higher punctuation at Trial 2 or 3. Higher is better. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  24. Visual recognition memory

    Assessed by: Brief Visuospatial Memory Test - Revised (BVMT-R) - Figure Recognition: range: from 0 to 6. Higher is better. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  25. Visual discrimination memory

    Assessed by: Brief Visuospatial Memory Test - Revised (BVMT-R) - Discrimination index: figure recognized minus false positives. Range: from -6 to 6. Higher is better. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  26. Processing speed

    Processing speed Index (PSI; from Weschler Adult Intelligence Scale - IV (WAIS-IV). Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  27. TMT-A

    Trail Making Test part A (TMT-A): - Time in seconds: from 0 to infinity. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  28. TMT-B

    Trail Making Test part B (TMT-B): - Time in seconds: from 0 to infinity. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  29. Naming

    Assessed by: Boston Naming Test (BNT) - Total correct: from 0 to 60 Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  30. Naming with cues

    Assessed by: Boston Naming Test (BNT) - Total correct with phonemic cue: from 0 to 60

    Time frame: 18 months

  31. Latency in naming

    Assessed by: Boston Naming Test (BNT) - Time to complete test in seconds

    Time frame: 18 months

  32. Semantic fluency

    Number of name of animals recalled in 1 minute: range: from 0 to infinity. (Test Barcelona - Revised) (for ADULTS) Number of name of animals recalled in 1 minute + number of name of food and drinks recalled in 1 minute: from 0 to infinity (NEPSY - II) (for CHILDREN) Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  33. Phonemic fluency

    Number of words started by letter "M" recalled in 1 minute: Range: from 0 to infinity. (Test Barcelona-Revised) (for ADULTS) Number of words started by letter "P" recalled in 1 minute + number of words started by letter "M" in 1 minute: range: from 0 to infinity (NEPSY-II) (for CHILDREN). Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  34. Visuospatial skills

    Number location subtest of the Visual-Object Spatial and Perceptual battery. - Range: from 0 to 10 Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  35. Visuospatial skills - children

    Assessed by Arrows subtest of NEPSY-2 battery - Range: from 0 to 20 Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  36. Stroop test - word subtest

    - Words: words read in 45 seconds Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  37. Stroop test - color subtest

    - Colour: colours distinguished in 45 seconds. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  38. Stroop test - word-color subtest

    - Word-colour: colours distinguished in 45 seconds. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  39. Detectability - CPT3

    Assessed by Continuous Performance Test - 3rd Version. Measures the respondent's ability to differentiate non-targets (i.e. the letter X) from targets (i.e. all other letters). Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  40. Omissions - CPT3

    Assessed by Continuous Performance Test - 3rd Version. Result from a failure to respond to targets. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  41. Comissions - CPT3

    Assessed by Continuous Performance Test - 3rd Version. Comissions are made when responses are given to non-targets. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  42. HRT - CPT3

    Assessed by Continuous Performance Test - 3rd Version. Hit Reaction Time (HRT) is the mean response speed of correct responses from the whole administration. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  43. HRT-SD - CPT3

    Assessed by Continuous Performance Test - 3rd Version. Hit Reaction Time Standard Deviation (HRT-SD) is a measure of response speed consistency during the entire administration. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  44. Variability- CPT3

    Assessed by Continuous Performance Test - 3rd Version. The amount of variability that the patient showed in 18 separate segments of the administration in relation to their own overall Hit Reaction Time Standard Deviation (HRT-SD). It is a measure of response consistency and a "within respondent" measure". Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  45. HRT Block Change - CPT3

    Assessed by Continuous Performance Test - 3rd Version. Hit Reaction Time Block Change indicates the change in mean response speed across blocks. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  46. HRT ISI Change - CPT3

    Assessed by Continuous Performance Test - 3rd Version. Hit Reaction Time Inter-Stimulus Interval Change (HRT ISI Change) indicates the change in mean response speed at various ISIs. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  47. Prensence of psychiatric symptoms or disorders in presential assessments

    Number of participants with psychiatric symptoms/disorders following DSM-IV-TR guidelines (psychotic symptoms, symptoms of depression, symptoms of mania, global functioning).

    Time frame: 18 months

  48. Sleep microstructure - Total study time

    It will be adapted to patient's sleep habits (\~23:00 to 07:30) using a digital polygraph (Deltamed). This includes EEG in 43 scalp channels + 11 channels for electrooculography, electrocardiography, electromyography, and audiovisual recording (sampling rate 256 Hz). Sleep stages will be scored manually (AASM criteria) using 30-s epochs, with modifications depending on sleep alterations, as reported. Parameters: - Total sleep time: minutes

    Time frame: 18 months

  49. Sleep microstructure - Total sleep time

    It will be adapted to patient's sleep habits (\~23:00 to 07:30) using a digital polygraph (Deltamed). This includes EEG in 43 scalp channels + 11 channels for electrooculography, electrocardiography, electromyography, and audiovisual recording (sampling rate 256 Hz). Sleep stages will be scored manually (AASM criteria) using 30-s epochs, with modifications depending on sleep alterations, as reported. Parameters: - Total sleep time: minutes

    Time frame: 18 months

  50. Sleep microstructure - Sleep efficiency

    It will be adapted to patient's sleep habits (\~23:00 to 07:30) using a digital polygraph (Deltamed). This includes EEG in 43 scalp channels + 11 channels for electrooculography, electrocardiography, electromyography, and audiovisual recording (sampling rate 256 Hz). Sleep stages will be scored manually (AASM criteria) using 30-s epochs, with modifications depending on sleep alterations, as reported. Parameters: - Sleep efficiency: based on total study time and total sleep time

    Time frame: 18 months

  51. Sleep microstructure - Time to sleep onset

    It will be adapted to patient's sleep habits (\~23:00 to 07:30) using a digital polygraph (Deltamed). This includes EEG in 43 scalp channels + 11 channels for electrooculography, electrocardiography, electromyography, and audiovisual recording (sampling rate 256 Hz). Sleep stages will be scored manually (AASM criteria) using 30-s epochs, with modifications depending on sleep alterations, as reported. Parameters: - Time to sleep onset: minutes

    Time frame: 18 months

  52. Sleep microstructure - Time in stage N1

    It will be adapted to patient's sleep habits (\~23:00 to 07:30) using a digital polygraph (Deltamed). This includes EEG in 43 scalp channels + 11 channels for electrooculography, electrocardiography, electromyography, and audiovisual recording (sampling rate 256 Hz). Sleep stages will be scored manually (AASM criteria) using 30-s epochs, with modifications depending on sleep alterations, as reported. Parameters: - Time in stage N1: minutes

    Time frame: 18 months

  53. Sleep microstructure - Time in stage N2

    It will be adapted to patient's sleep habits (\~23:00 to 07:30) using a digital polygraph (Deltamed). This includes EEG in 43 scalp channels + 11 channels for electrooculography, electrocardiography, electromyography, and audiovisual recording (sampling rate 256 Hz). Sleep stages will be scored manually (AASM criteria) using 30-s epochs, with modifications depending on sleep alterations, as reported. Parameters: - Time in stage N2: minutes

    Time frame: 18 months

  54. Sleep microstructure - Time in stage N3

    It will be adapted to patient's sleep habits (\~23:00 to 07:30) using a digital polygraph (Deltamed). This includes EEG in 43 scalp channels + 11 channels for electrooculography, electrocardiography, electromyography, and audiovisual recording (sampling rate 256 Hz). Sleep stages will be scored manually (AASM criteria) using 30-s epochs, with modifications depending on sleep alterations, as reported. Parameters: - Time in stage N3: minutes

    Time frame: 18 months

  55. Sleep microstructure - Time in stage R

    It will be adapted to patient's sleep habits (\~23:00 to 07:30) using a digital polygraph (Deltamed). This includes EEG in 43 scalp channels + 11 channels for electrooculography, electrocardiography, electromyography, and audiovisual recording (sampling rate 256 Hz). Sleep stages will be scored manually (AASM criteria) using 30-s epochs, with modifications depending on sleep alterations, as reported. Parameters: - Time in stage R: minutes

    Time frame: 18 months

  56. Sleep microstructure - First epoch of N1

    It will be adapted to patient's sleep habits (\~23:00 to 07:30) using a digital polygraph (Deltamed). This includes EEG in 43 scalp channels + 11 channels for electrooculography, electrocardiography, electromyography, and audiovisual recording (sampling rate 256 Hz). Sleep stages will be scored manually (AASM criteria) using 30-s epochs, with modifications depending on sleep alterations, as reported. Parameters: - First epoch of N1: minutes

    Time frame: 18 months

  57. Sleep microstructure - First epoch of N2

    It will be adapted to patient's sleep habits (\~23:00 to 07:30) using a digital polygraph (Deltamed). This includes EEG in 43 scalp channels + 11 channels for electrooculography, electrocardiography, electromyography, and audiovisual recording (sampling rate 256 Hz). Sleep stages will be scored manually (AASM criteria) using 30-s epochs, with modifications depending on sleep alterations, as reported. Parameters: - First epoch of N2: minutes

    Time frame: 18 months

  58. Sleep microstructure - First epoch of N3

    It will be adapted to patient's sleep habits (\~23:00 to 07:30) using a digital polygraph (Deltamed). This includes EEG in 43 scalp channels + 11 channels for electrooculography, electrocardiography, electromyography, and audiovisual recording (sampling rate 256 Hz). Sleep stages will be scored manually (AASM criteria) using 30-s epochs, with modifications depending on sleep alterations, as reported. Parameters: - First epoch of N3: minutes

    Time frame: 18 months

  59. Sleep microstructure - First epoch of REM

    It will be adapted to patient's sleep habits (\~23:00 to 07:30) using a digital polygraph (Deltamed). This includes EEG in 43 scalp channels + 11 channels for electrooculography, electrocardiography, electromyography, and audiovisual recording (sampling rate 256 Hz). Sleep stages will be scored manually (AASM criteria) using 30-s epochs, with modifications depending on sleep alterations, as reported. Parameters: - First epoch of REM: minutes

    Time frame: 18 months

  60. Sleep microstructure - REM/NREM time ratio

    It will be adapted to patient's sleep habits (\~23:00 to 07:30) using a digital polygraph (Deltamed). This includes EEG in 43 scalp channels + 11 channels for electrooculography, electrocardiography, electromyography, and audiovisual recording (sampling rate 256 Hz). Sleep stages will be scored manually (AASM criteria) using 30-s epochs, with modifications depending on sleep alterations, as reported. Parameters: - REM/NREM time ratio

    Time frame: 18 months

  61. Sleep microstructure - Number of arousals

    It will be adapted to patient's sleep habits (\~23:00 to 07:30) using a digital polygraph (Deltamed). This includes EEG in 43 scalp channels + 11 channels for electrooculography, electrocardiography, electromyography, and audiovisual recording (sampling rate 256 Hz). Sleep stages will be scored manually (AASM criteria) using 30-s epochs, with modifications depending on sleep alterations, as reported. Parameters: - Number of arousals (total)

    Time frame: 18 months

  62. Sleep microstructure - Arousal Index

    It will be adapted to patient's sleep habits (\~23:00 to 07:30) using a digital polygraph (Deltamed). This includes EEG in 43 scalp channels + 11 channels for electrooculography, electrocardiography, electromyography, and audiovisual recording (sampling rate 256 Hz). Sleep stages will be scored manually (AASM criteria) using 30-s epochs, with modifications depending on sleep alterations, as reported. Parameters: - Arousal Index

    Time frame: 18 months

  63. Sleep microstructure - Confusional arousals

    It will be adapted to patient's sleep habits (\~23:00 to 07:30) using a digital polygraph (Deltamed). This includes EEG in 43 scalp channels + 11 channels for electrooculography, electrocardiography, electromyography, and audiovisual recording (sampling rate 256 Hz). Sleep stages will be scored manually (AASM criteria) using 30-s epochs, with modifications depending on sleep alterations, as reported. Parameters: - Confusional arousals: Yes or No

    Time frame: 18 months

  64. Sleep microstructure - Direct transition from N3 to W

    It will be adapted to patient's sleep habits (\~23:00 to 07:30) using a digital polygraph (Deltamed). This includes EEG in 43 scalp channels + 11 channels for electrooculography, electrocardiography, electromyography, and audiovisual recording (sampling rate 256 Hz). Sleep stages will be scored manually (AASM criteria) using 30-s epochs, with modifications depending on sleep alterations, as reported. Parameters: - Direct transition from N3 to W: yes or no

    Time frame: 18 months

  65. Sleep microstructure - Delta arousals

    It will be adapted to patient's sleep habits (\~23:00 to 07:30) using a digital polygraph (Deltamed). This includes EEG in 43 scalp channels + 11 channels for electrooculography, electrocardiography, electromyography, and audiovisual recording (sampling rate 256 Hz). Sleep stages will be scored manually (AASM criteria) using 30-s epochs, with modifications depending on sleep alterations, as reported. Parameters: - "Delta arousals"?: yes, no or unknown

    Time frame: 18 months

  66. Sleep microstructure - Wake after sleep

    It will be adapted to patient's sleep habits (\~23:00 to 07:30) using a digital polygraph (Deltamed). This includes EEG in 43 scalp channels + 11 channels for electrooculography, electrocardiography, electromyography, and audiovisual recording (sampling rate 256 Hz). Sleep stages will be scored manually (AASM criteria) using 30-s epochs, with modifications depending on sleep alterations, as reported. Parameters: - Wake after sleep: hour

    Time frame: 18 months

  67. Adherence to cognitive treatment - 6 months

    Number of sessions performed in 6 months

    Time frame: 6 months

  68. Adherence to cognitive treatment - 9 months

    Number of sessions performed in 9 months

    Time frame: 9 months

  69. Adherence to cognitive treatment - 12 months

    Number of sessions performed in 12 months

    Time frame: 12 months

Secondary outcomes

  1. Immune/inflammatory signaling-target gene expression pathways

    Whole blood/CSF will be collected using PAXgene® Blood RNA Tubes (Qiagen) shipped to the centers. Blood from healthy subjects and CSF from patients with normal pressure hydrocephalus will serve as controls. Total RNA will be extracted using PAXgene® Blood RNA Kit (Qiagen). RNA samples are quantified using Qubit 2.0 Fluorometer (Life Technologies) and RNA integrity is determined with Agilent 2100 Bioanalyzer (Agilent Technologies). Expression levels of 44 genes related to immune/inflammatory (or cytokine) pathways will be measured with the nCounter® Digital Analyzer (NanoString). The raw copy number of mRNA transcripts of each gene will be standardized (stdGene) using the geometric mean of the 4 housekeeping genes for each subject.

    Time frame: 18 months

  2. Neurofilament light chain (NfL) levels in acute stage

    Signature of molecular biomarkers in the acute stage

    Time frame: 18 months

  3. Neurofilament light chain (NfL) levels in post-acute stage

    Signature of molecular biomarkers in the post-acute stages

    Time frame: 18 months

  4. Cell immunophenotyping - proportion of CD4

    Whole blood/CSF obtained in a EDTA tube will be analyzed in a FACS Canto II cytometer to assess the proportion of CD4.

    Time frame: 18 months

  5. Cell immunophenotyping - proportion of CD8

    Whole blood/CSF obtained in a EDTA tube will be analyzed in a FACS Canto II cytometer to assess the proportion of CD8.

    Time frame: 18 months

  6. Cell immunophenotyping - proportion of CD8+CD45RA+

    Whole blood/CSF obtained in a EDTA tube will be analyzed in a FACS Canto II cytometer to assess the proportion of CD8+CD45RA+.

    Time frame: 18 months

  7. Cell immunophenotyping - proportion of CD8+CD45RO+

    Whole blood/CSF obtained in a EDTA tube will be analyzed in a FACS Canto II cytometer to assess the proportion of CD8+CD45RO+.

    Time frame: 18 months

  8. Cell immunophenotyping - proportion of iNKT

    Whole blood/CSF obtained in a EDTA tube will be analyzed in a FACS Canto II cytometer to assess the proportion of iNKT.

    Time frame: 18 months

  9. Cell immunophenotyping - proportion of CD19

    Whole blood/CSF obtained in a EDTA tube will be analyzed in a FACS Canto II cytometer to assess the proportion of CD19.

    Time frame: 18 months

  10. Cell immunophenotyping - proportion of B naive (IgM+IgD+CD27-)

    Whole blood/CSF obtained in a EDTA tube will be analyzed in a FACS Canto II cytometer to assess the proportion of B naive (IgM+IgD+CD27-).

    Time frame: 18 months

  11. Cell immunophenotyping - proportion of B memory (IgD-)

    Whole blood/CSF obtained in a EDTA tube will be analyzed in a FACS Canto II cytometer to assess the proportion of B memory (IgD-).

    Time frame: 18 months

  12. Cell immunophenotyping - proportion of regulatory B cells

    Whole blood/CSF obtained in a EDTA tube will be analyzed in a FACS Canto II cytometer to assess the proportion of regulatory B cells.

    Time frame: 18 months

  13. Cell immunophenotyping - proportion of plasmablasts

    Whole blood/CSF obtained in a EDTA tube will be analyzed in a FACS Canto II cytometer to assess the proportion of plasmablasts.

    Time frame: 18 months

  14. Cell immunophenotyping - proportion of NK cells

    Whole blood/CSF obtained in a EDTA tube will be analyzed in a FACS Canto II cytometer to assess the proportion of NK cells.

    Time frame: 18 months

  15. MRI

    It will be conducted on a 3 Tesla Prisma scanner using a 32-channel head coil. Scanning takes \~50 min including 3D T1-weighted in sagittal plane; T2\*axial EPI; axial diffusion weighted EPI; 3D sagittal FLAIR; resting state functional MRI and glutamate and H2O univoxel spectroscopy in dorsolateral prefrontal cortex and hippocampus. There is no contrast used for the MRI scans Outcome for MRI is normal or abnormal. Investigators will review all MRI sequences and determine if the MRI is abnormal and then describe the abnormality or abnormalities seen.

    Time frame: 18 months

  16. EEG: normalcy

    It will include standard clinical EEG protocol (43 channels, 512 Hz18) (primary variables), and EEG reactivations of memories prior to new trials (secondary variables) while participants perform WM tasks, which will be synchronized with the task software in a laptop. The memory content from alpha power across electrodes will be related to the decoding accuracy in different task periods to disease treatment and recovery and to behavioral parameters (WM precision, serial biases). Performances of the subjects produces a reactivation of memory prior to new trials while participants perform working memory tasks, and relate the decoding accuracy in different task periods to disease treatment and recovery and to behavioral parameters (WM precision, serial biases). - Normalcy: yes or no.

    Time frame: 18 months

  17. EEG: time awake

    It will include standard clinical EEG protocol (43 channels, 512 Hz18) (primary variables), and EEG reactivations of memories prior to new trials (secondary variables) while participants perform WM tasks, which will be synchronized with the task software in a laptop. The memory content from alpha power across electrodes will be related to the decoding accuracy in different task periods to disease treatment and recovery and to behavioral parameters (WM precision, serial biases). Performances of the subjects produces a reactivation of memory prior to new trials while participants perform working memory tasks, and relate the decoding accuracy in different task periods to disease treatment and recovery and to behavioral parameters (WM precision, serial biases). Parameters: - Time awake: percentage

    Time frame: 18 months

  18. EEG: time in drowsiness

    It will include standard clinical EEG protocol (43 channels, 512 Hz18) (primary variables), and EEG reactivations of memories prior to new trials (secondary variables) while participants perform WM tasks, which will be synchronized with the task software in a laptop. The memory content from alpha power across electrodes will be related to the decoding accuracy in different task periods to disease treatment and recovery and to behavioral parameters (WM precision, serial biases). Performances of the subjects produces a reactivation of memory prior to new trials while participants perform working memory tasks, and relate the decoding accuracy in different task periods to disease treatment and recovery and to behavioral parameters (WM precision, serial biases). Parameters: - Time in drowsiness: percentage

    Time frame: 18 months

  19. EEG: time asleep

    It will include standard clinical EEG protocol (43 channels, 512 Hz18) (primary variables), and EEG reactivations of memories prior to new trials (secondary variables) while participants perform WM tasks, which will be synchronized with the task software in a laptop. The memory content from alpha power across electrodes will be related to the decoding accuracy in different task periods to disease treatment and recovery and to behavioral parameters (WM precision, serial biases). Performances of the subjects produces a reactivation of memory prior to new trials while participants perform working memory tasks, and relate the decoding accuracy in different task periods to disease treatment and recovery and to behavioral parameters (WM precision, serial biases). Parameters: - Time asleep: percentage

    Time frame: 18 months

  20. EEG: epileptiform activity

    It will include standard clinical EEG protocol (43 channels, 512 Hz18) (primary variables), and EEG reactivations of memories prior to new trials (secondary variables) while participants perform WM tasks, which will be synchronized with the task software in a laptop. The memory content from alpha power across electrodes will be related to the decoding accuracy in different task periods to disease treatment and recovery and to behavioral parameters (WM precision, serial biases). Performances of the subjects produces a reactivation of memory prior to new trials while participants perform working memory tasks, and relate the decoding accuracy in different task periods to disease treatment and recovery and to behavioral parameters (WM precision, serial biases). Parameters: - Epileptiform activity: yes or no

    Time frame: 18 months

  21. EEG: seizures

    It will include standard clinical EEG protocol (43 channels, 512 Hz18) (primary variables), and EEG reactivations of memories prior to new trials (secondary variables) while participants perform WM tasks, which will be synchronized with the task software in a laptop. The memory content from alpha power across electrodes will be related to the decoding accuracy in different task periods to disease treatment and recovery and to behavioral parameters (WM precision, serial biases). Performances of the subjects produces a reactivation of memory prior to new trials while participants perform working memory tasks, and relate the decoding accuracy in different task periods to disease treatment and recovery and to behavioral parameters (WM precision, serial biases). Parameters: - Seizures: yes or no

    Time frame: 18 months

  22. EEG: slowing

    It will include standard clinical EEG protocol (43 channels, 512 Hz18) (primary variables), and EEG reactivations of memories prior to new trials (secondary variables) while participants perform WM tasks, which will be synchronized with the task software in a laptop. The memory content from alpha power across electrodes will be related to the decoding accuracy in different task periods to disease treatment and recovery and to behavioral parameters (WM precision, serial biases). Performances of the subjects produces a reactivation of memory prior to new trials while participants perform working memory tasks, and relate the decoding accuracy in different task periods to disease treatment and recovery and to behavioral parameters (WM precision, serial biases). Parameters: - EEG slowing: yes or no

    Time frame: 18 months

  23. EEG: Changes with Intermittent Light Stimulation

    It will include standard clinical EEG protocol (43 channels, 512 Hz18) (primary variables), and EEG reactivations of memories prior to new trials (secondary variables) while participants perform WM tasks, which will be synchronized with the task software in a laptop. The memory content from alpha power across electrodes will be related to the decoding accuracy in different task periods to disease treatment and recovery and to behavioral parameters (WM precision, serial biases). Performances of the subjects produces a reactivation of memory prior to new trials while participants perform working memory tasks, and relate the decoding accuracy in different task periods to disease treatment and recovery and to behavioral parameters (WM precision, serial biases). Parameters: - Changes with Intermittent Light Stimulation: yes or no

    Time frame: 18 months

  24. EEG: Changes with hyperventilation

    It will include standard clinical EEG protocol (43 channels, 512 Hz18) (primary variables), and EEG reactivations of memories prior to new trials (secondary variables) while participants perform WM tasks, which will be synchronized with the task software in a laptop. The memory content from alpha power across electrodes will be related to the decoding accuracy in different task periods to disease treatment and recovery and to behavioral parameters (WM precision, serial biases). Performances of the subjects produces a reactivation of memory prior to new trials while participants perform working memory tasks, and relate the decoding accuracy in different task periods to disease treatment and recovery and to behavioral parameters (WM precision, serial biases). Parameters: - Changes with hyperventilation: yes or no

    Time frame: 18 months

  25. Verbal working memory - remote assessment

    Assessed by: Digit subtest from WAIS-IV: obtained by Forward order, indirect order, increasing order subtests. - Range: 0 - 48 Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  26. Verbal learning - remote assessment

    Assessed by: Total learning List A subtest from Rey Auditory Verbal Learning Test (RAVLT) - Range: 0 - 75 Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  27. Proactive interference verbal memory - remote assessment

    Assessed by: List B subtest from Rey Auditory Verbal Learning Test (RAVLT) - Range: 0 - 15 Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  28. Short-term verbal memory - remote assessment

    Assessed by: Short-term verbal memory subtest from Rey Auditory Verbal Learning Test (RAVLT) - Range: 0 - 15 Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  29. Long-term verbal memory - remote assessment

    Assessed by: Long-term verbal memory subtest from Rey Auditory Verbal Learning Test (RAVLT) - Range: 0 - 15 Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  30. Verbal recognition memory - remote assessment

    Assessed by: Verbal recognition memory list subtest from Rey Auditory Verbal Learning Test (RAVLT) - Range: 0 - 15 Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  31. Verbal discrimination memory - remote assessment

    Assessed by: Verbal discrimination memory subtest from Rey Auditory Verbal Learning Test (RAVLT) - Range: 0 - 1 Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  32. Complex figure copy - remote assessment

    Assessed by: Precision in the copy of the Rey-Osterrieth Complex Figure: - Range: 0-36 Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  33. Time - Complex figure copy - remote assessment

    Assessed by: Time to perform the copy of the Rey-Osterrieth Complex Figure: seconds Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  34. Type - Complex figure copy - remote assessment

    Assessed by: Type of copy of the Rey-Osterrieth Complex Figure: - Range: 1 to 4

    Time frame: 18 months

  35. Short-term visual memory - remote assessment

    Assessed by: Short term memory subtest of the Rey-Osterrieth Complex Figure: - Range: 0 - 36 Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  36. Long-term visual memory - remote assessment

    Assessed by: Long-term memory subtest of the Rey-Osterrieth Complex Figure: - Range: 0 - 36 Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  37. Orientation in time - remote assessment

    Assessed by: Orientation in time subtest from Test Barcelona - Revised. - Range: 0 - 5 Higher is better.

    Time frame: 18 months

  38. Orientation in space - remote assessment

    Assessed by: Orientation in space subtest from Test Barcelona - Revised. - Range: 0 -5

    Time frame: 18 months

  39. 5DT Lecture - remote assessment

    Assessed by: Lecture subtest from 5 digit test: time Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  40. 5DT counting - remote assessment

    Assessed by: Counting subtest from 5 digit test: time Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  41. 5DT Choosing - remote assessment

    Assessed by: Choosing subtest from 5 digit test: time Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  42. 5DT Switching - remote assessment

    Assessed by: Switching subtest from 5 digit test: time Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  43. 5DT Inhibition - remote assessment

    Assessed by: Inhibition subtest from 5 digit test: time Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  44. 5DT Flexibility - remote assessment

    Assessed by: Flexibility subtest from 5 digit test: time Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  45. IEDEEDS - remote assessment

    IED EDS Errors: The number of times that the subject failed to select the stimulus compatible with the current rule on the stage where the extra-dimensional shift occurs. This is a measure of the subject's ability to shift attentional set. Assessed by: Intra-Extra Dimensional test from CANTAB battery. - Raw score range: 0 - 50. Lower is better. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  46. IEDYERTA - remote assessment

    IED Total Errors (Adjusted): The total number of times that the subject chose a wrong stimulus - i.e. one incompatible with the current rule, adjustment for every stage that was not reached. Lower is better. Total Errors Adjusted = Total Errors (problems reached) + \[(number of unreached problems) \* (25)\] This is a measure of the subject's efficiency in attempting the test. Subjects failing at any stage of the test will have had less opportunity to make errors. The adjustment is carried out to compensate for this missing data, and provide a more comparable error score to subjects completing all stages of the test.. Assessed by: Intra-Extra Dimensional test from CANTAB battery. - Raw score range: 0 - 402. Lower is better. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  47. IEDYCOST - remote assessment

    IED Stages Completed: This is the total number of stages the subject completed successfully. There are nine stages to be completed. Higher is better. Assessed by: Intra-Extra Dimensional test from CANTAB battery. - Range: 0 - 9. Higher is better.

    Time frame: 18 months

  48. SWM Total Errors - remote assessment

    SWM Total Errors: The total number of times a box is selected that is certain not to contain a token and therefore should not have been visited by the subject, i.e. between errors + within errors - double errors. Calculated across all assessed four, six and eight token trials. Assessed by: Spatial Working Memory test from CANTAB battery. - Range: 0 - 157. Lower is better

    Time frame: 18 months

  49. SWM Between Errors - remote assessment

    SWM Between Errors: The number of times the subject incorrectly revisits a box in which a token has previously been found. Calculated across all assessed four, six and eight token trials. Assessed by: Spatial Working Memory test from CANTAB battery: - Raw score range: 0 - 153. Lower is better. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  50. SWM Within Errors - remote assessment

    SWM Within Errors: The number of times a subject revisits a box already shown to be empty during the same search. Calculated across all assessed four, six and eight token trials. Assessed by: Spatial Working Memory test from CANTAB battery: - Range: 0 - 153. Lower is better.

    Time frame: 18 months

  51. SWM Double Errors - remote assessment

    SWM Double Errors: The number of times a subject commits an error that is both a within error and a between error. Calculated across all assessed four, six and eight token trials. Assessed by: Spatial Working Memory test from CANTAB battery: - Range: 0 - 147. Lower is better.

    Time frame: 18 months

  52. SWMS - remote assessment

    SWM Strategy (6-8 boxes): The number of times a subject begins a new search pattern from the same box they started with previously. If they always begin a search from the same starting point we infer that the subject is employing a planned strategy for finding the tokens. Therefore a low score indicates high strategy use (1 = they always begin the search from the same box), a high score indicates that they are beginning their searches from many different boxes. Calculated across assessed trials with 6 tokens or 8 tokens. Assessed by: Spatial Working Memory test from CANTAB battery: - Range: 2 - 14. Lower is better. Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased

    Time frame: 18 months

  53. SWMSX - remote assessment

    SWM Strategy (6-12 boxes): The number of times a subject begins a new search pattern from the same box they started with previously. If they always begin a search from the same starting point we infer that the subject is employing a planned strategy for finding the tokens. Therefore a low score indicates high strategy use (1 = they always begin the search from the same box), a high score indicates that they are beginning their searches from many different boxes. Calculated across assessed trials with 6 tokens or more. Assessed by: Spatial Working Memory test from CANTAB battery: - Range: 3 - 26. Lower is better.

    Time frame: 18 months

  54. SWMPR - remote assessment

    SWM Problem Reached: This measure reports the problem number that the subject reached, but did not necessarily complete. Assessed by: Spatial Working Memory test from CANTAB battery: - Range: 2 - 6. Higher is better.

    Time frame: 18 months

  55. ERTTH - remote assessment

    Assessed by: Emotion Recognition Task from CANTAB battery. ERT Total Hits: The total number of times the subject selected the correct emotion. Calculated across all assessed trials. - Range: 0 - 90. Higher is Better

    Time frame: 18 months

  56. ERTTHH - remote assessment

    Assessed by: Emotion Recognition Task from CANTAB battery. ERT Total Hits Happiness: The total number of times the subject correctly selected the emotion 'Happiness'. Calculated across all assessed trials. - Range: 0 - 15 . Higher is Better

    Time frame: 18 months

  57. ERTTHS - remote assessment

    Assessed by: Emotion Recognition Task from CANTAB battery. ERT Total Hits Sadness: The total number of times the subject correctly selected the emotion 'Sadness'. Calculated across all assessed trials. - Range: 0 - 15 . Higher is Better

    Time frame: 18 months

  58. ERTTHF - remote assessment

    Assessed by: Emotion Recognition Task from CANTAB battery. ERT Total Hits Fear: The total number of times the subject correctly selected the emotion 'Fear'. Calculated across all assessed trials. - Range: 0 - 15 . Higher is Better

    Time frame: 18 months

  59. ERTTHA - remote assessment

    Assessed by: Emotion Recognition Task from CANTAB battery. ERT Total Hits Anger: The total number of times the subject correctly selected the emotion 'Anger'. Calculated across all assessed trials. - Range: 0 - 15 . Higher is Better

    Time frame: 18 months

  60. ERTTHSU - remote assessment

    Assessed by: Emotion Recognition Task from CANTAB battery ERT Total Hits Surprise: The total number of times the subject correctly selected the emotion 'Surprise'. Calculated across all assessed trials. - Range: 0 - 15 . Higher is Better.

    Time frame: 18 months

  61. ERTTHD - remote assessment

    Assessed by: Emotion Recognition Task from CANTAB battery. ERT Total Hits Disgust: The total number of times the subject correctly selected the emotion 'Disgust'. Calculated across all assessed trials. - Range: 0 - 15 . Higher is Better.

    Time frame: 18 months

  62. ERTTFAH - remote assessment

    Assessed by: Emotion Recognition Task from CANTAB battery. ERT Total False Alarms Happiness: The total number of times the subject incorrectly selected the emotion 'Happiness'. Calculated across all assessed trials. - Range: 0 - 75 . Lower is Better.

    Time frame: 18 months

  63. ERTTFAS - remote assessment

    Assessed by: Emotion Recognition Task from CANTAB battery. ERT Total False Alarms Sadness: The total number of times the subject incorrectly selected the emotion 'Sadness'. Calculated across all assessed trials. - Range: 0 - 75 . Lower is Better.

    Time frame: 18 months

  64. ERTTFAF - remote assessment

    Assessed by: Emotion Recognition Task from CANTAB battery. ERT Total False Alarms Fear: The total number of times the subject incorrectly selected the emotion 'Fear'. Calculated across all assessed trials. - Range: 0 - 75 . Lower is Better.

    Time frame: 18 months

  65. ERTTFAA - remote assessment

    Assessed by: Emotion Recognition Task from CANTAB battery. ERT Total False Alarms Anger: The total number of times the subject incorrectly selected the emotion 'Anger'. Calculated across all assessed trials. - Range: 0 - 75 . Lower is Better.

    Time frame: 18 months

  66. ERTTFASU - remote assessment

    Assessed by: Emotion Recognition Task from CANTAB battery. ERT Total False Alarms Surprise: The total number of times the subject incorrectly selected the emotion 'Surprise'. Calculated across all assessed trials. - Range: 0 - 75 . Lower is Better.

    Time frame: 18 months

  67. ERTTFAD - remote assessment

    Assessed by: Emotion Recognition Task from CANTAB battery. ERT Total False Alarms Disgust: The total number of times the subject incorrectly selected the emotion 'Disgust'. Calculated across all assessed trials. - Range: 0 - 75 . Lower is Better.

    Time frame: 18 months

  68. ERTUHRH - remote assessment

    Assessed by: Emotion Recognition Task from CANTAB battery. ERT Unbiased Hit Rate Happiness: The unbiased hit rate ensures that recognition accuracy of the Happiness emotion is not influenced by response guessing or response bias effects. It takes into consideration the joint probability of an individual making a correct response, based on the presentation of the correct stimulus out of the available possibilities. Calculated for assessed Happiness trials only. - Range: 0 to 1. Higher is better.

    Time frame: 18 months

  69. ERTUHRS - remote assessment

    Assessed by: Emotion Recognition Task from CANTAB battery. ERT Unbiased Hit Rate Sadness: The unbiased hit rate ensures that recognition accuracy of the Sadness emotion is not influenced by response guessing or response bias effects. It takes into consideration the joint probability of an individual making a correct response, based on the presentation of the correct stimulus out of the available possibilities. Calculated for assessed Sadness trials only - Range: 0 to 1. Higher is better.

    Time frame: 18 months

  70. ERTUHRF - remote assessment

    Assessed by: Emotion Recognition Task from CANTAB battery. ERT Unbiased Hit Rate Fear: The unbiased hit rate ensures that recognition accuracy of the Fear emotion is not influenced by response guessing or response bias effects. It takes into consideration the joint probability of an individual making a correct response, based on the presentation of the correct stimulus out of the available possibilities. Calculated for assessed Fear trials only. - Range: 0 to 1. Higher is better.

    Time frame: 18 months

  71. ERTUHRA - remote assessment

    Assessed by: Emotion Recognition Task from CANTAB battery. ERT Unbiased Hit Rate Anger: The unbiased hit rate ensures that recognition accuracy of the Anger emotion is not influenced by response guessing or response bias effects. It takes into consideration the joint probability of an individual making a correct response, based on the presentation of the correct stimulus out of the available possibilities. Calculated for assessed Anger trials only. - Range: 0 to 1. Higher is better.

    Time frame: 18 months

  72. ERTUHRSU - remote assessment

    Assessed by: Emotion Recognition Task from CANTAB battery. ERT Unbiased Hit Rate Surprise: The unbiased hit rate ensures that recognition accuracy of the Surprise emotion is not influenced by response guessing or response bias effects. It takes into consideration the joint probability of an individual making a correct response, based on the presentation of the correct stimulus out of the available possibilities. Calculated for assessed Anger trials only. - Range: 0 to 1. Higher is better.

    Time frame: 18 months

  73. ERTUHRSD - remote assessment

    Assessed by: Emotion Recognition Task from CANTAB battery. ERT Unbiased Hit Rate Disgust: The unbiased hit rate ensures that recognition accuracy of the Disgust emotion is not influenced by response guessing or response bias effects. It takes into consideration the joint probability of an individual making a correct response, based on the presentation of the correct stimulus out of the available possibilities. Calculated for assessed Disgust trials only. - Range: 0 to 1. Higher is better.

    Time frame: 18 months

  74. Semantic fluency - remote assessment

    Assessed by: Semantic fluency test: * Produce names of fruits and vegetables in 1 minute (Test Barcelona - Revised) (for ADULTS) * Number of name of animals recalled in 1 minute + number of name of food and drinks recalled in 1 minute: from 0 to infinity (NEPSY - II) (for CHILDREN) Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  75. Phonemic fluency - remote assessment

    Assessed by: Phonemic fluenct test: * Produce words that start with letter M in 1 minute: range from 0 to infinity (Test Barcelona - Revised) (for ADULTS) * Number of words started by letter "P" recalled in 1 minute + number of words started by letter "M" in 1 minute: range: from 0 to infinity (NEPSY-II) (for CHILDREN). Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  76. Naming - remote assessment

    Assessed by: Boston Naming Test (BNT): - Range: from 0 to 60 Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  77. Naming with cues - remote assessment

    Assessed by: Boston Naming Test (BNT) - Total correct with phonemic cue: from 0 to 60

    Time frame: 18 months

  78. Time in Naming - remote assessment

    Assessed by: Boston Naming Test (BNT): time to complete

    Time frame: 18 months

  79. Visuospatial skills - remote assessment

    Assessed by: Benton Judgment of Line Orientation Test (JLO): - Range: 0 to 30 Raw scores were transformed into standard T-scores (mean 50 ± standard deviation \[SD\] 10) and a score below 35 (≤ 1.5 SD below normative mean, or the equivalent ≤9th percentile) was considered significantly decreased.

    Time frame: 18 months

  80. Psychiatric symptoms/disorders in remote assessments

    Number of participants with psychiatric symptoms/disorders following DSM-IV-TR guidelines (psychotic symptoms, symptoms of depression, symptoms of mania, global functioning).

    Time frame: 18 months

  81. Serial bias in working memory

    This is quantified from the participant responses in the working memory task. Errors in the report of memorized locations are multiplied by the sign of the difference in locations in the previous and current trials and then averaged over the whole session to obtain the index of serial bias. We expect increases in this index as patients improve clinically.

    Time frame: 18 months

  82. EEG reactivations in working memory

    This is quantified by training decoders of memorized locations on EEG signals acquired over several electrodes during the working memory task. Reactivations are the average strength of the decoders during the fixation period of the next trial. We expect that EEG reactivations increase as patients improve clinically and correlate with the serial bias index.

    Time frame: 18 months

  83. Slow-wave rate of growth during slow-wave sleep period

    This is quantified from EEG recorded during sleep, by detecting individual slow-waves and estimating their strength, and then computing the rate of growth of this strength in the first slow-wave periods in the night. We expect the rate of growth of slow waves to increase as patients improve.

    Time frame: 18 months

07

Study locations

1 of 1 sites recruiting
  • Hospital Clínic de Barcelona
    Barcelona, Cataluña 08036, Spain
    Recruiting
    • Josep Dalmau, MD, PhD · Contactjdalmau@clinic.cat · +34 93 227 1738
    • Victor Patricio, MS · Contactvpatricio@recerca.clinic.cat · +34 93 227 1738
    • Josep Dalmau, MD, PhD · Principal investigator
    • Thais Armanguè, MD, PhD · Principal investigator
    • Mar Guasp, MD, PhD · Sub investigator
    • Eugenia Martínez-Hernández, MD, PhD · Sub investigator
    • Victor Patricio, MS · Sub investigator
    • Amaia Muñoz, MD · Sub investigator
    • Laia Prades, MS · Sub investigator
08

References and documents

Publications

  • Guasp M, Rosa-Justicia M, Munoz-Lopetegi A, Martinez-Hernandez E, Armangue T, Sugranyes G, Stein H, Borras R, Prades L, Arino H, Planaguma J, De-La-Serna E, Escudero D, Llufriu S, Sanchez-Valle R, Santamaria J, Compte A, Castro-Fornieles J, Dalmau J; Spanish anti-NMDAR Encephalitis Study Group. Clinical characterisation of patients in the post-acute stage of anti-NMDA receptor encephalitis: a prospective cohort study and comparison with patients with schizophrenia spectrum disorders. Lancet Neurol. 2022 Oct;21(10):899-910. doi: 10.1016/S1474-4422(22)00299-X. PubMed 36115362 ↗
  • Titulaer MJ, McCracken L, Gabilondo I, Armangue T, Glaser C, Iizuka T, Honig LS, Benseler SM, Kawachi I, Martinez-Hernandez E, Aguilar E, Gresa-Arribas N, Ryan-Florance N, Torrents A, Saiz A, Rosenfeld MR, Balice-Gordon R, Graus F, Dalmau J. Treatment and prognostic factors for long-term outcome in patients with anti-NMDA receptor encephalitis: an observational cohort study. Lancet Neurol. 2013 Feb;12(2):157-65. doi: 10.1016/S1474-4422(12)70310-1. Epub 2013 Jan 3. PubMed 23290630 ↗
  • Arino H, Munoz-Lopetegi A, Martinez-Hernandez E, Armangue T, Rosa-Justicia M, Escudero D, Matos N, Graus F, Sugranyes G, Castro-Fornieles J, Compte A, Dalmau J, Santamaria J. Sleep disorders in anti-NMDAR encephalitis. Neurology. 2020 Aug 11;95(6):e671-e684. doi: 10.1212/WNL.0000000000009987. Epub 2020 Jun 23. PubMed 32576635 ↗
  • Finke C, Kopp UA, Scheel M, Pech LM, Soemmer C, Schlichting J, Leypoldt F, Brandt AU, Wuerfel J, Probst C, Ploner CJ, Pruss H, Paul F. Functional and structural brain changes in anti-N-methyl-D-aspartate receptor encephalitis. Ann Neurol. 2013 Aug;74(2):284-96. doi: 10.1002/ana.23932. Epub 2013 Jul 8. PubMed 23686722 ↗
  • Heine J, Kopp UA, Klag J, Ploner CJ, Pruss H, Finke C. Long-Term Cognitive Outcome in Anti-N-Methyl-D-Aspartate Receptor Encephalitis. Ann Neurol. 2021 Dec;90(6):949-961. doi: 10.1002/ana.26241. Epub 2021 Oct 21. PubMed 34595771 ↗
  • Armangue T, Titulaer MJ, Malaga I, Bataller L, Gabilondo I, Graus F, Dalmau J; Spanish Anti-N-methyl-D-Aspartate Receptor (NMDAR) Encephalitis Work Group. Pediatric anti-N-methyl-D-aspartate receptor encephalitis-clinical analysis and novel findings in a series of 20 patients. J Pediatr. 2013 Apr;162(4):850-856.e2. doi: 10.1016/j.jpeds.2012.10.011. Epub 2012 Nov 16. PubMed 23164315 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 6, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06183788
Lead sponsor
Fundacion Clinic per a la Recerca Biomédica
Collaborators
Hospital Sant Joan de Deu
Responsible party
Sponsor
First posted
Dec 28, 2023
Start date
Jan 16, 2023
Primary completion
Jan 1, 2025 (estimated)
Completion
Nov 30, 2025 (estimated)
Last update
May 6, 2024

Study contacts

Josep Dalmau, MD,PhD
Contact
jdalmau@clinic.cat
34 93 227 1738
Josep Dalmau, MD, PhD
principal investigator · Hospital Clínic

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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