Amish, Mennonite, and Hutterite
Genetic Disorder Database

Mucolipidosis II alpha/beta

Disorder
OMIM #: #252500  (Click to access OMIM database)
Disorder: Mucolipidosis II alpha/beta 
Also known as: I-Cell Disease
Mucolipidosis II 
Clinical
Phenotype: coarse features, otitis media, epicanthal folds, low nasal bridge anteverted nostrils, macroglossia, heart failure, cardiomegaly, cardiomyopathy, respiratory infections, skeletal dysplasia, hypotonia, failure to thrive, short stature, sudden death  
Seen In: Amish
Old Order Mennonite
Old Colony Mennonite
Unknown/Other Mennonite
Hutterite
Remarks: Autosomal recessive 
Mutations
1   Amish  
Gene: GNPTAB
Base Change: c.3503_3504delTC
Amino Acid Change: p.Leu1168Glnfs*5
2   Old Order Mennonite  
Gene: GNPTAB
Base Change: c.732_733delAA
Amino Acid Change:
Last updated: 2022-12-07 

References
Coutinho MF, Encarnação M, Gomes R, da Silva Santos L, Martins S, Sirois-Gagnon D, Bargal R, Filocamo M, Raas-Rothschild A, Tappino B, Laprise C, Cury GK, Schwartz IV, Artigalás O, Prata MJ, Alves S. (2011) Origin and spread of a common deletion causing mucolipidosis type II: insights from patterns of haplotypic diversity. Clin Genet Sep;80(3):273-80.
PubMed ID: 20880125 
Speer RR, Ezeanya UC, Beaudoin SJ, Glass KM, Oji-Mmuo CN. (2020) Term Neonate Presenting with the Combined Occurrence of Mucolipidosis Type II and Leigh Syndrome. J Pediatr Genet Jun;9(2):137-141.
PubMed ID: 32341820 

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