DNA mutation analysis of Gaucher patients

E Sidransky, S Tsuji, BM Martin… - American journal of …, 1992 - Wiley Online Library
E Sidransky, S Tsuji, BM Martin, B Stubblefield, EI Ginns
American journal of medical genetics, 1992Wiley Online Library
We evaluated 62 Gaucher patients to determine whether patients with similar phenotypes
had the same DNA point mutations. Genomic DNA from these Gaucher patients was
screened for the 3 most frequent single‐point mutations, occurring in 69% of the 124 patient
alleles, and resulting in changes in amino acids 370, 444, and 463. Many different
genotypes were observed, at least one of which is present in all 3 types of Gaucher disease.
No specific symptom complex could be correlated with a unique genotype. Even the more …
Abstract
We evaluated 62 Gaucher patients to determine whether patients with similar phenotypes had the same DNA point mutations. Genomic DNA from these Gaucher patients was screened for the 3 most frequent single‐point mutations, occurring in 69% of the 124 patient alleles, and resulting in changes in amino acids 370, 444, and 463. Many different genotypes were observed, at least one of which is present in all 3 types of Gaucher disease. No specific symptom complex could be correlated with a unique genotype. Even the more clinically homogeneous subgroups of Gaucher patients contained several genotypes. This study further emphasizes the need for caution in making clinical predictions on the basis of current genotype analysis, especially since one might not discern a fetus affected with type 2 disease by current DNA studies. The severity of involvement in type 1 disease could also not be predicted. Thus, even limiting our focus to 3 isolated common point mutations, a given genotype cannot be uniquely correlated with a specific prognosis.
Wiley Online Library