Amish, Mennonite, and Hutterite
Genetic Disorder Database

Cohen Syndrome

Disorder
OMIM #: #216550  (Click to access OMIM database)
Disorder: Cohen Syndrome 
Also known as: COH1
HYPOTONIA, OBESITY, AND PROMINENT INCISORS
PEPPER SYNDROME 
Clinical
Phenotype: retinal dystrophy, myopia, developmental delay, seizures, cerebellar hypoplasia, microcephaly, downslanting palpebral fissures, prominent nasal bridge, prominent upper central incisors, mitral valve prolapse, single transverse palmar crease, joint hypermobiliity, short stature, hypotonia, small hands and feet 
Seen In: Amish
Old Order Mennonite
Old Colony Mennonite
Unknown/Other Mennonite
Hutterite
Remarks: Autosomal recessive  
Mutations
1   Amish  
Gene: VPS13B
Base Change: c.9260dupT
Amino Acid Change: p.Leu3087Phefs*20
2   Amish  
Gene: VPS13B
Base Change: T>C, at nucleotide 8459
Amino Acid Change: ile 2820> thr
Last updated: 2022-12-06 

References
Chu EA, Cummings A, Sala N 2nd, Sala N. (2022) Bilateral Subluxation of Microspherophakic Lens in a Child with Cohen Syndrome. J Binocul Vis Ocul Motil Aug 2:1-3.
PubMed ID: 35917505 
Falk MJ, Feiler HS, Neilson DE, Maxwell K, Lee JV, Segall SK, Robin NH, Wilhelmsen KC, Träskelin AL, Kolehmainen J, Lehesjoki AE, Wiznitzer M, Warman ML. (2004) Cohen syndrome in the Ohio Amish. Am J Med Genet A 128(1): 23-28.
PubMed ID: 15211651 

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