Genetic testing and prenatal diagnosis of two pedigrees affected with Huntington disease / 中华医学遗传学杂志
Chinese Journal of Medical Genetics
;
(6): 446-449, 2021.
Article
in Chinese
| WPRIM
| ID: wpr-879599
ABSTRACT
OBJECTIVE@#To explore the genetic basis for two Chinese pedigrees affected with Huntington disease and provide prenatal diagnosis for them.@*METHODS@#Peripheral venous blood samples were collected from the probands. PCR and capillary gel electrophoresis were used to determine the number of CAG repeats in their IT15 gene. Pre-symptomatic testing was offered to their children and relatives, and prenatal diagnosis was provided to three pregnant women from the two pedigrees.@*RESULTS@#The two probands, in addition with three asymptomatic members, were found to have a (CAG)n repeat number greater than 40. Upon prenatal diagnosis, the numbers of CAG repeats in two fetuses from pedigree 1 were determined as (16, 19) and (18, 19), both were within the normal range. A fetus from pedigree 2 was found to have a CAG repeat number of (15, 41), which exceeded the normal range.@*CONCLUSION@#Genetic testing can facilitate the diagnosis of Huntington disease and avoid further birth of affected children.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Pedigree
/
Prenatal Diagnosis
/
Genetic Testing
/
Huntington Disease
/
Nerve Tissue Proteins
Type of study:
Diagnostic study
Limits:
Child
/
Female
/
Humans
/
Pregnancy
Language:
Chinese
Journal:
Chinese Journal of Medical Genetics
Year:
2021
Type:
Article
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