A Phase 2 interventional study of Neflamapimod in Dementia With Lewy Bodies (DLB), sponsored by EIP Pharma Inc. Completed at 24 sites in 2 countries. Open to participants aged 55 Years and older. Per ClinicalTrials.gov, last updated 2023-06-29.
Sponsored by EIP Pharma Inc · Phase 2, Interventional, and Treatment
This is a Phase 2, multi-center, randomized, double-blind, placebo-controlled, proof-of-principle study of neflamapimod versus matching placebo (randomized 1:1) administered with food for 16 weeks in subjects with DLB. The primary objective is to evaluate the effect of neflamapimod on cognitive function as assessed in a study-specific Cogstate Neuropsychological Test Battery (NTB). Secondary endpoints include the Clinical Dementia Rating Scale-Sum of Boxes (CDR-SB), Mini-Mental State Examination (MMSE), Neuropsychiatric Inventory (NPI-10), Timed Up and Go Test, and electroencephalogram (EEG) as a potential biomarker for DLB.
Exclusion Criteria:
40 mg capsules administered orally, BID or TID with food for 16 weeks; subjects will follow the BID regimen if weighing \<80 kg or the TID regimen if weighing ≥80 kg
Drug: Neflamapimod
40 mg matching placebo capsules administered orally, BID or TID with food for 16 weeks; subjects will follow the BID regimen if weighing \<80 kg or the TID regimen if weighing ≥80 kg
Drug: Neflamapimod
Double-Blind, Placebo-Controlled
Composite Z-score of a Study-specific Neuropsychological Test Battery (NTB) Including Tests From Cogstate Battery, Letter Fluency Test and Category Fluency Test
Change from Baseline to Week 4, Week 8, and Week 16 in the composite z-score of a study-specific Neuropsychological Test Battery (NTB) that included the following six tests: Cogstate Detection test (DET), Cogstate Identification test (IDN), Cogstate One Card Learning test (OCL), Cogstate One Back test (ONB), Letter Fluency Test, and Category Fluency Test (CFT). Each score on the individual tests was converted to a z-score, and then a total z-score for the composite was calculated, in which each test is weighted equally. As the analysis is based on z-scores, there is no minimum or maximum value. A z-score of 0 is equal to the mean with negative numbers indicating values lower than the mean and positive values higher. A positive change in z-score indicate an improvement in cognition, i.e., a better outcome; and a negative change in z-score indicates a worsening in cognition, i.e., a worse outcome.
Time frame: As the analysis was by Mixed Model for Repeated Measures, all time points at which NTB was assessed utilized in the analysis. The difference reported is the mean difference over the entire course of the study.
Clinical Dementia Rating Scale-Sum of Boxes (CDR-SB)
Change in Clinical Dementia Rating Scale-Sum of Boxes (CDR-SB) score from Baseline to Week 8 and Week 16 based on semi-quantitative scoring of six domains (i.e., "box": 1) memory, 2) orientation, 3) judgement \& reasoning, 4) home \& hobbies, 5) community affairs, and 6) personal care. The CDR score ranges from 0 (no impairment), 0.5 (questionable impairment), 1 (mild impairment), 2 (moderate impairment), and 3 (severe impairment). The domain (box) scores are then added for a Sum of Boxes score. With six domains, the CDR-SB score then ranges from 0 to 18; with higher scores indicated worse outcomes.
Time frame: As the analysis was by Mixed Model for Repeated Measures, both time points at which CDR-SB was assessed (week 8 and 16) was utilized in the analysis. The difference reported is the mean difference over the entire course of the study.
Mini-Mental State Examination (MMSE)
The Mini-Mental State Examination (MMSE) is a general measure of cognition that assesses orientation, memory, concentration, language, and praxis. Scores range from 0 to 30 with lower scores indicating greater cognitive impairment, i.e. a worse outcome). The MMSE was assessed at Week 8 and Week 16 during the study.
Time frame: As the analysis was by Mixed Model for Repeated Measures, both time points at which MMSE was assessed (week 8 and 16) was utilized in the analysis. The difference reported is the mean difference over the entire course of the study.
Neuropsychiatric Inventory (NPI-10) - Mean Change in Hallucinations Domain Score
The NPI-10 consists evaluates ten domains: delusions, hallucinations, agitation/aggression, dysphoria, anxiety, euphoria, apathy, disinhibition, irritability/lability, and aberrant motor activity. If caregiver reports symptoms within a domain then the caregiver rates the frequency of the symptoms on a 4-point scale, and severity on a 3-point scale. Total score for each domain is the frequency score multiplied by the severity score; i.e. the domain score (e.g. for hallucinations) for any one domain ranges from 0-12, with higher scores indicating worsening. A secondary objective of this study was to evaluate the effect of neflamapimod in four specific domains, specifically depression (dysphoria), anxiety, hallucinations, and agitation/aggression, in neflamapimod-treated subjects compared to placebo-recipients. Of these four, the only domain in which more than one-quarter of the patients reported symptoms is hallucinations, and the result of this analysis is reported.
Time frame: As the analysis was by Mixed Model for Repeated Measures, all time points at which NPI-10 was assessed (weeks 4, 8 and 16) was utilized in the analysis. The difference reported is the mean difference over the entire course of the study.
International Shopping List Test (ISLT) - Immediate Recall
The International Shopping List Test (ISLT) was developed specifically to assess verbal list learning and memory in people from different language and cultural backgrounds. 12 words, consisting to items typically in a grocery shopping list in the specific culture are provided verbally, and subject asked to recall ask many words as possible. The immediate recall score consists of the number of words that the subject correctly repeats during three consecutive trials immediately following provision of words. The range is then from 0 to 36 (12 words maximum in each of 3 trials), with higher scores (i.e., the more words recalled) reflecting better outcomes.
Time frame: As the analysis was by Mixed Model for Repeated Measures, both time points at which ISLT was assessed (Weeks 4, 8 and 16) was utilized in the analysis. The difference reported is the mean difference over the entire course of the study.
Timed Up and Go Test (TUG)
The Timed Up and Go test assesses function mobility, and was included in the study to evaluate the effects of neflamapimod on motor function. The TUG measures the time in seconds that a person takes to rise from a chair, walk three meters, turn around 180 degrees, walk back to the chair, and sit down while turning 180 degrees. The TUG was evaluated at Baseline, and Weeks 8 and 16 of the study. There is no minimum or maximum value for this test, though in Parkinson's disease patients values above 11.5 seconds was associated with an increased risk of falls and each one second increase in the time required to complete the TUG is associated with a 5.4% increase in the risk of falls (Arch Phys Med Rehabil. 2013;94: 1300-1305). That is, an increase in the time required to complete the TUG is a worse outcome.
Time frame: As the analysis was by Mixed Model for Repeated Measures, both time points at which the TUG was assessed (week 8 and 16) was utilized in the analysis. The difference reported is the mean difference over the entire course of the study.
Quantitative Electroencephalogram (qEEG)m - Dominant Peak Frequency Over Parietal Lobe
Change in quantitative electroencephalogram (qEEG) parameters with the subject awake in accordance with the 10-20 International System of Electrode placement was to be evaluated as a potential biomarker for DLB. However, due to COVID19 related restrictions, baseline and week 16 EEG recordings were obtained only in limited number of subjects. As slowing of the dominant frequency band by qEEG over posterior aspects of the brain has been recognized to be prominent in DLB, the change in the dominant frequency band over the parietal lobe in Hz from baseline to week 16 is reported. This is a continuous variable with no minimum or maximum. A decrease in the frequency (i.e., slowing) reflects worsening of disease, while a positive treatment effect would be an increase in the frequency. With the limited number of subjects formal statistical analysis was not conducted.
Time frame: 16 weeks
| Milestone | Neflamapimod TID | Neflamapimod BID | Placebo TID | Placebo BID |
|---|---|---|---|---|
| Started | 20 | 26 | 27 | 18 |
| Completed | 20 | 20 | 26 | 15 |
| Not completed | 0 | 6 | 1 | 3 |
Change from Baseline to Week 4, Week 8, and Week 16 in the composite z-score of a study-specific Neuropsychological Test Battery (NTB) that included the following six tests: Cogstate Detection test (DET), Cogstate Identification test (IDN), Cogstate One Card Learning test (OCL), Cogstate One Back test (ONB), Letter Fluency Test, and Category Fluency Test (CFT). Each score on the individual tests was converted to a z-score, and then a total z-score for the composite was calculated, in which each test is weighted equally. As the analysis is based on z-scores, there is no minimum or maximum value. A z-score of 0 is equal to the mean with negative numbers indicating values lower than the mean and positive values higher. A positive change in z-score indicate an improvement in cognition, i.e., a better outcome; and a negative change in z-score indicates a worsening in cognition, i.e., a worse outcome.
| Z-Score | Neflamapimod TID | Neflamapimod BID | Placebo |
|---|---|---|---|
| Baseline | 0.06 ± 0.17 | 0.02 ± 0.15 | 0.05 ± 0.11 |
| Week 4 | 0.17 ± 0.14 | -0.08 ± 0.18 | -0.05 ± 0.13 |
| Week 8 | 0.28 ± 0.16 | -0.12 ± 0.18 | 0.05 ± 0.17 |
| Week 16 | 0.21 ± 0.18 | -0.08 ± 0.21 | -0.03 ± 0.14 |
Change in Clinical Dementia Rating Scale-Sum of Boxes (CDR-SB) score from Baseline to Week 8 and Week 16 based on semi-quantitative scoring of six domains (i.e., "box": 1) memory, 2) orientation, 3) judgement \& reasoning, 4) home \& hobbies, 5) community affairs, and 6) personal care. The CDR score ranges from 0 (no impairment), 0.5 (questionable impairment), 1 (mild impairment), 2 (moderate impairment), and 3 (severe impairment). The domain (box) scores are then added for a Sum of Boxes score. With six domains, the CDR-SB score then ranges from 0 to 18; with higher scores indicated worse outcomes.
| Scores on a scale | Neflamapimod TID | Neflamapimod BID | Placebo |
|---|---|---|---|
| Week 8 | 0.11 ± 0.2 | 0.19 ± 0.3 | 0.76 ± 0.25 |
| Week 16 | 0.34 ± 0.2 | 0.34 ± 0.18 | 0.86 ± 0.32 |
The Mini-Mental State Examination (MMSE) is a general measure of cognition that assesses orientation, memory, concentration, language, and praxis. Scores range from 0 to 30 with lower scores indicating greater cognitive impairment, i.e. a worse outcome). The MMSE was assessed at Week 8 and Week 16 during the study.
| Scores on a scale | Neflamapimod TID | Neflamapimod BID | Placebo |
|---|---|---|---|
| Week 8 | 0.11 ± 0.74 | 0.08 ± 0.64 | -0.59 ± 0.38 |
| Week 16 | -0.85 ± .49 | -1.75 ± 0.67 | -0.53 ± 0.49 |
The NPI-10 consists evaluates ten domains: delusions, hallucinations, agitation/aggression, dysphoria, anxiety, euphoria, apathy, disinhibition, irritability/lability, and aberrant motor activity. If caregiver reports symptoms within a domain then the caregiver rates the frequency of the symptoms on a 4-point scale, and severity on a 3-point scale. Total score for each domain is the frequency score multiplied by the severity score; i.e. the domain score (e.g. for hallucinations) for any one domain ranges from 0-12, with higher scores indicating worsening. A secondary objective of this study was to evaluate the effect of neflamapimod in four specific domains, specifically depression (dysphoria), anxiety, hallucinations, and agitation/aggression, in neflamapimod-treated subjects compared to placebo-recipients. Of these four, the only domain in which more than one-quarter of the patients reported symptoms is hallucinations, and the result of this analysis is reported.
| Score on a scale | Neflamapimod 40 mg BID | Neflamapimod TID | Placebo |
|---|---|---|---|
| Week 4 | 0.1 ± .875 | -1.71 ± 1.23 | 0.56 ± 0.697 |
| Week 8 | 0.63 ± .46 | -0.86 ± 1.22 | 0.86 ± 0.61 |
| Week 16 | 3.29 ± 1.97 | -0.5 ± 1.2 | 1.71 ± 1.19 |
The International Shopping List Test (ISLT) was developed specifically to assess verbal list learning and memory in people from different language and cultural backgrounds. 12 words, consisting to items typically in a grocery shopping list in the specific culture are provided verbally, and subject asked to recall ask many words as possible. The immediate recall score consists of the number of words that the subject correctly repeats during three consecutive trials immediately following provision of words. The range is then from 0 to 36 (12 words maximum in each of 3 trials), with higher scores (i.e., the more words recalled) reflecting better outcomes.
| Scores on a scale | Neflamapimod TID | Neflamapimod BID | Placebo |
|---|---|---|---|
| Change from baseline to week 4 | 0.29 ± 1.08 | -1.24 ± 0.61 | 0.11 ± 0.54 |
| Change from baseline to week 8 | 2.11 ± 1.66 | -0.75 ± 1.37 | 0.41 ± 0.65 |
| Change from baseline to week 16 | 0.30 ± 1.04 | 0.11 ± .99 | -0.15 ± .46 |
The Timed Up and Go test assesses function mobility, and was included in the study to evaluate the effects of neflamapimod on motor function. The TUG measures the time in seconds that a person takes to rise from a chair, walk three meters, turn around 180 degrees, walk back to the chair, and sit down while turning 180 degrees. The TUG was evaluated at Baseline, and Weeks 8 and 16 of the study. There is no minimum or maximum value for this test, though in Parkinson's disease patients values above 11.5 seconds was associated with an increased risk of falls and each one second increase in the time required to complete the TUG is associated with a 5.4% increase in the risk of falls (Arch Phys Med Rehabil. 2013;94: 1300-1305). That is, an increase in the time required to complete the TUG is a worse outcome.
| Seconds | Neflamapimod TID | Neflamapimod BID | Placebo |
|---|---|---|---|
| Week 8 | -0.2 ± 0.5 | 1.0 ± 0.9 | 0.4 ± 0.4 |
| Week 16 | -1.4 ± 1.0 | 1.3 ± 0.7 | 1.5 ± 0.9 |
Change in quantitative electroencephalogram (qEEG) parameters with the subject awake in accordance with the 10-20 International System of Electrode placement was to be evaluated as a potential biomarker for DLB. However, due to COVID19 related restrictions, baseline and week 16 EEG recordings were obtained only in limited number of subjects. As slowing of the dominant frequency band by qEEG over posterior aspects of the brain has been recognized to be prominent in DLB, the change in the dominant frequency band over the parietal lobe in Hz from baseline to week 16 is reported. This is a continuous variable with no minimum or maximum. A decrease in the frequency (i.e., slowing) reflects worsening of disease, while a positive treatment effect would be an increase in the frequency. With the limited number of subjects formal statistical analysis was not conducted.
| Hz | Neflamapimod TID | Placebo |
|---|---|---|
| Quantitative Electroencephalogram (qEEG)m - Dominant Peak Frequency Over Parietal Lobe | 0.24 ± 1.06 | 0.36 ± 0.95 |
Collected over AEs occurring from when the subject signed the ICF until the last study event were collected. (Study Duration = 16 weeks) Any AEs occurring before the start of treatment (i.e., before the first dose of the investigational product) were recorded in the medical history.. Non-serious events are listed at a 5% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| Neflamapimod TID | 0/20 (0%) | 0/20 (0%) | 8/20 (40%) |
| Neflamapimod BID | 0/26 (0%) | 3/26 (11.5%) | 8/26 (30.8%) |
| Placebo | 2/45 (4.4%) | 4/45 (8.9%) | 17/45 (37.8%) |
| Event | Neflamapimod TID | Neflamapimod BID | Placebo |
|---|---|---|---|
| New brain lesions of unclear etiologyNervous system disorders | 0/20 | 1/26 | 0/45 |
| Diagnosis of brain tumorNeoplasms benign, malignant and unspecified (incl cysts and polyps) | 0/20 | 1/26 | 0/45 |
| Head injuryInjury, poisoning and procedural complications | 0/20 | 1/26 | 0/45 |
| HematocheziaGastrointestinal disorders | 0/20 | 0/26 | 1/45 |
| Asthma exacerbationRespiratory, thoracic and mediastinal disorders | 0/20 | 0/26 | 1/45 |
| Intraparenchymal hemorrhageNervous system disorders | 0/20 | 0/26 | 1/45 |
| Internal bleedingBlood and lymphatic system disorders | 0/20 | 0/26 | 1/45 |
| Event | Neflamapimod TID | Neflamapimod BID | Placebo |
|---|---|---|---|
| FallInjury, poisoning and procedural complications | 1/20 | 5/26 | 4/45 |
| DiarrheaGastrointestinal disorders | 3/20 | 0/26 | 5/45 |
| HeadacheNervous system disorders | 3/20 | 1/26 | 2/45 |
| NauseaGastrointestinal disorders | 1/20 | 2/26 | 3/45 |
| TremorNervous system disorders | 0/20 | 0/26 | 3/45 |
| Age, Categorical(Participants) | Neflamapimod TID | Neflamapimod BID | Placebo | Total |
|---|---|---|---|---|
| <=18 years | 0 | 0 | 0 | 0 |
| Between 18 and 65 years | 2 | 2 | 7 | 11 |
| >=65 years | 18 | 24 | 38 | 80 |
| Age, Continuous(years) | Neflamapimod TID | Neflamapimod BID | Placebo | Total |
|---|---|---|---|---|
| Mean | 72.2 (59 to 84) | 74.5 (63 to 85) | 72.1 (62 to 87) | 72.8 (59 to 87) |
| Sex: Female, Male(Participants) | Neflamapimod TID | Neflamapimod BID | Placebo | Total |
|---|---|---|---|---|
| Female | 1 | 7 | 6 | 14 |
| Male | 19 | 19 | 39 | 77 |
| Ethnicity (NIH/OMB)(Participants) | Neflamapimod TID | Neflamapimod BID | Placebo | Total |
|---|---|---|---|---|
| Hispanic or Latino | 0 | 4 | 3 | 7 |
| Not Hispanic or Latino | 20 | 22 | 42 | 84 |
| Unknown or Not Reported | 0 | 0 | 0 | 0 |
| Race (NIH/OMB)(Participants) | Neflamapimod TID | Neflamapimod BID | Placebo | Total |
|---|---|---|---|---|
| American Indian or Alaska Native | 0 | 0 | 0 | 0 |
| Asian | 0 | 0 | 0 | 0 |
| Native Hawaiian or Other Pacific Islander | 0 | 0 | 0 | 0 |
| Black or African American | 0 | 0 | 1 | 1 |
| White | 20 | 26 | 44 | 90 |
| More than one race | 0 | 0 | 0 | 0 |
| Unknown or Not Reported | 0 | 0 | 0 | 0 |
| Region of Enrollment(participants) | Neflamapimod TID | Neflamapimod BID | Placebo | Total |
|---|---|---|---|---|
| Netherlands | 3 | 4 | 6 | 13 |
| United States | 17 | 22 | 39 | 78 |
| MMSE(units on a scale (range 0-30)) | Neflamapimod TID | Neflamapimod BID | Placebo | Total |
|---|---|---|---|---|
| Mean | 23.6 ± 3.7 | 22.4 ± 3.7 | 23.0 ± 4.1 | 23.0 ± 3.5 |
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EIP Pharma Inc