ClinicalTrials.gg
Not yet recruitingNCT07818460Updated Sep 15, 2026

Risk Factors and Prognosis of Autism Spectrum Disorder

An observational study in Autism Spectrum Disorder, Autistic Disorder and Child Development Disorders, Pervasive, sponsored by Assiut University. Not yet recruiting. Open to participants aged 3 Years to 17 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2026-09-15.

Primary conditionAutistic DisorderRegistry: Autism Spectrum DisorderReclassifiedWhy we changed it
Registry
Autism Spectrum Disorder — the first condition term the registry derived for this study.
ClinicalTrials.gg
Autistic Disorder
Why
  1. The study's listed conditions name Autistic Disorder, a narrower term within Autism Spectrum Disorder.
Confidence
High: the new condition is named in the study's own listed conditions. Of 351 hand-checked studies reclassified this way, 68% were exactly right and 84% in the right disease family; the registry's first term was right for 5% (measured 2026-10-21). How we classify →
Wrong?
Tell us the study's main condition →

Sponsored by Assiut University · Observational

Study type
Observational
Model
Case-control
Time perspective
Prospective
Enrollment
84
Ages
3 Years to 17 Years
Sex
All
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Study summary

This case-control study with prospective follow-up aims to identify risk factors associated with autism spectrum disorder and to evaluate the prognosis of children with ASD attending Assiut University Children's Hospital.

Read the detailed description

Autism spectrum disorder is a neurodevelopmental condition with multifactorial etiology involving genetic and environmental factors. This observational case-control study will include children aged 3 to 17 years diagnosed with ASD according to DSM-5 criteria and age- and sex-matched controls without neurodevelopmental disorders.

Risk factors (antenatal, perinatal, and postnatal) will be compared between cases and controls. Children with ASD will be followed for 6 months to assess changes in symptom severity and adaptive functioning.

02

Conditions studied

  • Autism Spectrum Disorder
  • Autistic Disorder
  • Child Development Disorders, Pervasive

Keywords

  • Autism spectrum disorder
  • Risk factors
  • Prognosis
  • CARS
  • Children
  • Assiut
03

In context

Autistic Disorder Reclassified

1,030 studies on the registry are indexed under Autistic Disorder; 266 are open to participants now.

This study's planned enrollment of 84 is below the median of 101 across 189 observational studies indexed under Autistic Disorder.

Browse Autistic Disorder studies →

Lead sponsor

Assiut University is the lead sponsor of 5,078 studies on the registry; 2,178 are open to participants now.

Of its 14 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Compared within Autistic Disorder, this study's primary condition as ClinicalTrials.gg classifies it; the registry's first condition term is Autism Spectrum Disorder. The counts are of registry records indexed under each term, refreshed daily. How we classify →

04

Who can participate

Ages eligible
3 Years to 17 Years
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Non-probability sample

Study population

Children aged 3 to 17 years attending Assiut University Children's Hospital (Pediatric Neurology Unit).

Eligibility criteria

Inclusion Criteria

Inclusion Criteria (Cases):

  • Age 3 to 17 years
  • Confirmed diagnosis of ASD according to criteria, supported by standardized tools (e.g., CARS)
  • Parent or legal guardian able and willing to provide

Inclusion Criteria (Controls):

- Age- and sex-matched children without ASD or other neurodevelopmental disorders

Exclusion Criteria:

  • Age below 3 years or above 17 years
  • Known chromosomal or genetic syndrome associated with secondary autistic features (e.g., Fragile X, Down syndrome), unless studied as a separate subgroup
  • Incomplete medical records
  • Refusal of parents/guardians to participate
  • Loss to follow-up before the minimum 6-month prognostic assessment
Terms in these criteria, in plain language(2)

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.

DSM diagnostic criteria

The American Psychiatric Association’s manual of mental health diagnoses. DSM-5 (2013, revised as DSM-5-TR in 2022) replaced DSM-IV, and some studies still name the older edition. “Meets DSM criteria for …” means diagnosed by that edition’s diagnostic criteria, usually by a clinician in an interview.

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

Observational model
Case-control
Time perspective
Prospective
Enrollment
84 participants (estimated)
Target follow-up
6 Months
Patient registry
Yes

Groups and cohorts

  • ASD Cases

    Children aged 3 to 17 years with confirmed diagnosis of autism spectrum disorder according to DSM-5 criteria, supported by standardized assessment tools (e.g., CARS), attending the Pediatric Neurology Unit of Assiut University Children's Hospital.

  • Controls

    Age- and sex-matched children without autism spectrum disorder or other neurodevelopmental disorders, attending the same hospital during the same study period.

06

What researchers measure

Primary outcomes

  1. Prevalence of risk factors in ASD versus controls

    Proportion of children with specific antenatal, perinatal, and postnatal risk factors (advanced parental age, consanguinity, maternal infection, gestational diabetes, birth asphyxia, NICU admission, and family history of ASD) among ASD cases compared with age- and sex-matched controls.

    Time frame: Baseline

Secondary outcomes

  1. Change in Childhood Autism Rating Scale score

    Change in Childhood Autism Rating Scale (CARS) total score from baseline to 6 months in children with ASD. CARS ranges from 15 to 60; higher scores indicate greater autism severity.

    Time frame: From baseline to 6 months

  2. Change in Vineland Adaptive Behavior Scales score

    Change in Vineland Adaptive Behavior Scales composite score from baseline to 6 months in children with ASD. Higher scores indicate better adaptive functioning.

    Time frame: From baseline to 6 months

  3. Response to early intervention

    Proportion of children with ASD showing clinical improvement after speech, occupational, and behavioral therapy.

    Time frame: At 6 months

  4. Development of comorbidities

    Proportion of children with ASD who develop associated comorbidities (seizures, gastrointestinal problems, sleep disturbances) during follow-up.

    Time frame: Through 6 months

07

Study locations

No study locations are listed for this record.

08

References and documents

Publications

  • Al-Mamari W, Idris AB, Fadlallah N, Jalees S, Al-Jabri M, Al-Shehhi H, Mohammed M, Alsayegh A. Consanguinity: The innocent culprit in autism severity. Sultan Qaboos Univ Med J. 2025 May 2;25(1):114-121. doi: 10.18295/squmj.10.2024.052. eCollection 2025. PubMed 40657467 ↗
  • Hamed NF, Alqahtani AM, Alshaibani F, Elsharif SM, Alamri SAS, Serhan A. Genetic and Environmental Risk Factors for Autism Spectrum Disorder in Saudi Arabia: A Systematic Review. Cureus. 2025 Oct 14;17(10):e94607. doi: 10.7759/cureus.94607. eCollection 2025 Oct. PubMed 41246720 ↗
  • Shaw KA, Williams S, Patrick ME, Valencia-Prado M, Durkin MS, Howerton EM, Ladd-Acosta CM, Pas ET, Bakian AV, Bartholomew P, Nieves-Munoz N, Sidwell K, Alford A, Bilder DA, DiRienzo M, Fitzgerald RT, Furnier SM, Hudson AE, Pokoski OM, Shea L, Tinker SC, Warren Z, Zahorodny W, Agosto-Rosa H, Anbar J, Chavez KY, Esler A, Forkner A, Grzybowski A, Agib AH, Hallas L, Lopez M, Magana S, Nguyen RHN, Parker J, Pierce K, Protho T, Torres H, Vanegas SB, Vehorn A, Zhang M, Andrews J, Greer F, Hall-Lande J, McArthur D, Mitamura M, Montes AJ, Pettygrove S, Shenouda J, Skowyra C, Washington A, Maenner MJ. Prevalence and Early Identification of Autism Spectrum Disorder Among Children Aged 4 and 8 Years - Autism and Developmental Disabilities Monitoring Network, 16 Sites, United States, 2022. MMWR Surveill Summ. 2025 Apr 17;74(2):1-22. doi: 10.15585/mmwr.ss7402a1. PubMed 40232988 ↗
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Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Sep 2026; primary completion for Sep 2027, 12 months later.

Of 57 non-industry observational studies under Autistic Disorder, half reached primary completion within 72 months of starting (the median), counting those still running; a quarter within 27 and three quarters within 144. This study's planned 12 months is below that.

Counting every sponsor, half of 65 studies reached it within 43 months; a quarter within 20 and three quarters within 120.

How these figures are worked out, and which studies are left out of them.

Registered
Sep 8, 2026
First posted
Sep 14, 2026
StartEst.
Sep 10, 2026
Primary completionEst.
Sep 20, 2027
CompletionEst.
Apr 10, 2028
Last update
Sep 15, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 15, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT07818460
Lead sponsor
Assiut University
Responsible party
Yasmin Abdelrahman Fathallah Mohamed (Resident Physician, Assiut University) — Principal investigator
First posted
Sep 14, 2026
Start date
Sep 10, 2026 (estimated)
Primary completion
Sep 20, 2027 (estimated)
Completion
Apr 10, 2028 (estimated)
Last update
Sep 15, 2026

Study contacts

Yasmin A Mohamed, Resident
Contact
Jasmine.18313474@med.aun.edu.eg
+20 11 13449521
Abdellatif M Abdelmoez, prof
study chair · pediatics Department, Assiut University Hospitals

Oversight

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

Not currently enrolling

This study is not yet recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.

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