Mutational screening of the coding region of growth differentiation factor 9 gene in Indian women with ovarian failure.
OBJECTIVE
To establish the risk associated with mutations in the coding region of GDF9 gene in Indian women with ovarian failure.


METHODS
This case-control study was designed for mutational analysis of the GDF9 coding region in a cohort of women with premature ovarian failure (n = 127), primary amenorrhea (n = 58), and secondary amenorrhea (n = 10) compared with controls (n = 220).


RESULTS
This case-control study revealed eight mutations in the GDF9 gene, including five novel mutations: c.1-8C>T, c.199A>C (p.Lys67Glu), c. 205C>T, c.646G>A (p.Val216Mat), and c.1353C>T, and three documented mutations: c.398-39C>G, c.447C>T, and c.546G>A. Missense mutation c.199A>C was present in 4 of 127 premature ovarian failure (POF) cases and 1 of 10 secondary amenorrhea cases. The c.646G>A mutation was present in two POF cases. Both missense mutations were absent in controls. Genotype distribution of c.447C>T was significantly different in POF cases than controls (chi(2) = 5.93, P = 0.05). We chose two frequent single-nucleotide polymorphisms (c.398-39C>G, c.447C>T) for haplotyping and found that the C-T haplotype was significantly higher in patients (P = 0.03), whereas the C-C haplotype was representative of the control group.


CONCLUSIONS
We report two rare missense mutations, c.199A>C and c.646G>A, which are associated with ovarian failure. The presence of the c.447>T mutation might indicate a higher risk for POF. Haplotype C-T was significantly associated with ovarian failure, whereas the C-C haplotype was representative of the control group.
Dixit
Hridesh
H
Centre for Cellular and Molecular Biology, Hyderabad, India.
Rao
Lakshmi K
LK
Padmalatha
Venkata
V
Kanakavalli
Murthy
M
Deenadayal
Mamatha
M
Gupta
Nalini
N
Chakravarty
Baidyanath
B
Singh
Lalji
L
D000293:Adolescent; D000328:Adult; D055430:Bone Morphogenetic Protein 15; D016022:Case-Control Studies; D004252:DNA Mutational Analysis; D005260:Female; D005838:Genotype; D055429:Growth Differentiation Factor 9; D006239:Haplotypes; D006801:Humans; D007194:India / Q000453:epidemiology; D036341:Intercellular Signaling Peptides and Proteins / Q000235:genetics*; D007621:Karyotyping; D008875:Middle Aged; D009154:Mutation; D020125:Mutation, Missense; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D016649:Primary Ovarian Insufficiency / Q000453:epidemiology / Q000235:genetics*
C525901:BMP15 protein, human; D055430:Bone Morphogenetic Protein 15; C525897:GDF9 protein, human; D055429:Growth Differentiation Factor 9; D036341:Intercellular Signaling Peptides and Proteins