Autism Spectrum Disorder Symptom Profiles in Fragile X Syndrome, Angelman Syndrome, Tuberous Sclerosis Complex and Neurofibromatosis Type 1.
Kyra Lubbers, Kamil R Hiralal, Gwendolyn C Dieleman and 11 others
PMID 39395123WHAT IT FOUND
Children with rare genetic syndromes do not share one autism symptom profile.
Clinical observation and parent reports often disagreed, with some children showing high repetitive behaviors but normal social interaction, or vice versa. This mismatch means assessment tools must be interpreted together rather than separately.
Key findings
01Latent profile analysis of clinical observation data identified four distinct symptom groups: non-spectrum, restricted and repetitive behavior only, social affect only, and full autism profile.
02Parent-report data identified four profiles that differed only by overall severity, failing to capture the specific domain strengths and weaknesses seen in clinical observation.
03NF1 patients were least likely to meet criteria for the most severe profiles, whereas Angelman and Fragile X patients were most likely to fall into severe categories, though heterogeneity remained within every group.
STILL TO COME
How it was doneWhat they foundWhat it means for PTsWhat it means for OTsWhat it means for SLPs
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What it does not show
The study used cross-sectional data, so it cannot determine if these symptom profiles remain stable over time. The ADOS analysis relied on only two broad subscales, which obscures which specific behaviors (e.g., eye contact vs. gestures) drive the profile. There was a discrepancy between the two assessment methods, and the authors could not fully resolve which method was more accurate for these specific syndromes. Selection bias may exist for Fragile X patients, as those with milder behavioral issues may not have sought care at this specialist center.
Declared interests
Funding was provided by Erasmus MC Fellowship and Stichting Vrienden van het Sophia.
The easy way to misread this
Do not treat a high score on a parent-report questionnaire as confirmation of a global autism profile. The study showed that parent reports and clinical observations often disagreed, with clinical observation revealing that some children had severe symptoms in one specific domain (like repetitive behavior) while being normal in others.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →