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Charlie M syndrome is a rare bone developmental disorder which belongs to a group of oromandibular limb hypogenesis syndromes that includes hypoglossia-hypodactyly and glossopalatine ankylosis. The major anomalies which occur commonly in this group are hypoplasia of the mandible, syndactyly and ectrodactyly, small mouth, cleft palate, hypodontia, and facial paralysis. Patients with Charlie M syndrome also present with hypertelorism, absent or conically crowned incisors, and variable degrees of hypodactyly of the hands and feet. There have been no further descriptions in the literature since 1976.
Features include very common findings: Narrow mouth, Thin vermilion border, Hypertelorism, and Micrognathia and others; and common findings: Short philtrum, Wide nasal bridge, and Abnormal metacarpal morphology. 16 total HPO annotations.
Organ System | Phenotype Count | Example Features |
|---|---|---|
Arms and legs | 4 | Split hand, Abnormal fingernail morphology, Finger syndactyly |
Phenotype severity distribution: 11 very common features, 3 common features.
Estimated prevalence: <1 in 1,000,000 (VERY_RARE).
No clinical trials have been registered for Charlie M syndrome.
2 publications have been identified in PubMed for Charlie M syndrome. Research spans Case Report / Case Series (50%) and Basic Science / Preclinical (50%).
Dremel SE (2025). [PMID: 40033018](https://pubmed.ncbi.nlm.nih.gov/40033018/). *EMBO J*. [Basic Science / Preclinical]
Jha M (2024). [PMID: 39822794](https://pubmed.ncbi.nlm.nih.gov/39822794/). *J Clin Exp Dent*. [Case Report / Case Series]
Data assembled from 4 of 12 sources · Last updated Sep 19, 2026, 7:51 AM UTC
European rare disease database
Genetic and Rare Diseases Info Center
Common questions about Charlie M syndrome
Head and neck |
1 |
Non-midline cleft of the upper lip |