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Features include always present findings: Global developmental delay and Intellectual disability; and very common findings: Anxiety. 22 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Brain and nerves | 15 | Delayed speech and language development, Absent speech, Dystonia |
SLITRK2 function has not been fully characterized.
Intellectual developmental disorder, X-linked 111 is associated with mutations in the SLITRK2 gene on chromosome X.
Genetic testing for SLITRK2 is available. Testing is considered confirmatory for diagnosis.
Phenotype severity distribution: 2 always present features, 1 very common feature, 7 common features.
No clinical trials have been registered for intellectual developmental disorder, X-linked 111.
7 publications have been identified in PubMed for intellectual developmental disorder, X-linked 111. Research spans Case Report / Case Series (29%), Basic Science / Preclinical (29%), and Review / Meta-Analysis (14%).
Boelaert K (2026). [PMID: 41508830](https://pubmed.ncbi.nlm.nih.gov/41508830/). *J Clin Endocrinol Metab*. [Review / Meta-Analysis]
Ordemann GJ (2026). [PMID: 40908583](https://pubmed.ncbi.nlm.nih.gov/40908583/). *Exp Physiol*. [Basic Science / Preclinical]
Verhoeven WMA (2025). [PMID: 39845198](https://pubmed.ncbi.nlm.nih.gov/39845198/). *Int Med Case Rep J*. [Case Report / Case Series]
Klusek J (2025). [PMID: 40418066](https://pubmed.ncbi.nlm.nih.gov/40418066/). *Am J Med Genet B Neuropsychiatr Genet*. [Epidemiology / Natural History]
Jeanne M (2025). [PMID: 39798962](https://pubmed.ncbi.nlm.nih.gov/39798962/). *J Med Genet*. [Clinical Trial Publication]
Data assembled from 5 of 12 sources · Last updated Sep 19, 2026, 6:45 AM UTC
Online Mendelian Inheritance in Man
2 |
Hippocampal atrophy, Corpus callosum atrophy |
Bones and joints | 1 | Kyphoscoliosis |
Digestive system | 1 | Feeding difficulties |
Martinez-Sanchez M (2025). [PMID: 39858627](https://pubmed.ncbi.nlm.nih.gov/39858627/). *Genes (Basel)*. [Basic Science / Preclinical]
Groeneweg S (2025). [PMID: 40420837](https://pubmed.ncbi.nlm.nih.gov/40420837/). *J Clin Endocrinol Metab*. [Case Report / Case Series]