Amish, Mennonite, and Hutterite
Genetic Disorder Database

Severe Combined Immunodeficiency, due to adenosine deaminase deficiency

Disorder
OMIM #: #102700  (Click to access OMIM database)
Disorder: Severe Combined Immunodeficiency, due to adenosine deaminase deficiency 
Also known as: SCID, T CELL-NEGATIVE, B CELL-NEGATIVE, NK CELL-NEGATIVE, SCID DUE TO ADA DEFICIENCY, ADA-SCID, SCID DUE TO ADA DEFICIENCY, EARLY-ONSET, SCID DUE TO ADA DEFICIENCY, DELAYED ONSET, INCLUDED, SCID DUE TO ADA DEFICIENCY, LATE-ONSET, INCLUDED, ADENOSINE DEAMINASE DEFICIENCY, PARTIAL, INCLUDED 
Clinical
Phenotype: sepsis, pneumonia, recurrent infections, failure to thrive, absent B cells, absent T cells, absent natural killer cells, reduced adenosine deaminase activity  
Seen In: Amish
Old Order Mennonite
Old Colony Mennonite
Unknown/Other Mennonite
Hutterite
Remarks:

Testing is available at LHSC.

Autosomal recessive 

Mutations
1   Amish  
Gene: ADA
Base Change: G>A, at nucleotide 646
Amino Acid Change: gly 216 --> arg
2   Old Colony Mennonite, Unknown / Other Mennonite  
Gene: ADA
Base Change: C>T, at nucleotide 424
Amino Acid Change: arg 142 --> term
Last updated: 2022-11-13 

References
Grunebaum E, Cohen A, Roifman CM. (2013) Recent advances in understanding and managing adenosine deaminase and purine nucleoside phosphorylase deficiencies. Curr Opin Allergy Clin Immunol Dec;13(6):630-8.
PubMed ID: 24113229 
Hirschhorn R, Chakravarti V, Puck J, and Douglas SD. (1991) Homozygosity for a newly identified missense mutation in a patient with very severe combined immunodeficiency due to adenosine deaminase deficiency (ADA-SCID). Am J Hum Genet 49(4): 878-885.
PubMed ID: 1680289 
Jilkina O, Thompson JR, Kwan L, Van Caeseele P, Rockman-Greenberg C, Schroeder ML. (2014) Retrospective TREC testing of newborns with Severe Combined Immunodeficiency and other primary immunodeficiency diseases. Mol Genet Metab Rep Aug 7;1:324-333.
PubMed ID: 27896105 
Santisteban I, Arredondo-Vega FX, Kelly S, Loubser M, Meydan N, Roifman C, Howell PL, Bowen T, Weinberg KI, Schroeder ML, et al. (1995) Three new adenosine deaminase mutations that define a splicing enhancer and cause severe and partial phenotypes: implications for evolution of a CpG hotspot and expression of a transduced ADA cDNA. Hum Mol Genet 4(11): 2081-2087.
PubMed ID: 8589684 

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