Hallazgo de una nueva mutación en una familia chilena con diabetes monogénica: caso clínico / Finding of a new mutation in a Chilean family with monogenic diabetes: report of one case
Rev. méd. Chile
;
146(7): 929-932, jul. 2018. tab, graf
Article
in Spanish
| LILACS
| ID: biblio-961480
ABSTRACT
We report a 21 years old woman, without offspring, with diabetes mellitus diagnosed at 17 years of age, without ketosis or weight loss. Her body mass index was 18 kg/m2. Her C peptide was normal (2.3 ng/ml) and diabetes mellitus type 1 autoantibodies were negative. A monogenic diabetes Maturity Onset Diabetes of the Young (MODY) was proposed. Her family study disclosed a diabetic father and a brother with altered fasting glucose levels. The University of Exeter score for MODY yielded a 75.5% probability of MODY2. In the genetic-molecular study of the glucokinase gene (MODY2), the patient had a mutation at position 1343 of exon 10, corresponding to a heterozygous substitution of guanine by adenine (1343 G >A). The same mutation was found in her father and brother. This mutation is different from those previously described in the literature. The described change determines that a glycine is replaced by aspartic at amino acid 448 of the enzyme (non-synonymous substitution). The diagnosis of MODY2 was therefore confirmed in the patient and her father. The mutation was inherited by paternal line.
Full text:
Available
Index:
LILACS (Americas)
Main subject:
Diabetes Mellitus, Type 2
Type of study:
Diagnostic study
Limits:
Female
/
Humans
Country/Region as subject:
South America
/
Chile
Language:
Spanish
Journal:
Rev. méd. Chile
Journal subject:
Medicine
Year:
2018
Type:
Article
Affiliation country:
Chile
Institution/Affiliation country:
Hospital San Juan de Dios/CL
/
Universidad de Chile/CL
Similar
MEDLINE
...
LILACS
LIS