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Infertility and Recurrent Pregnancy Loss v0.226 MTHFR Zornitza Stark Marked gene: MTHFR as ready
Infertility and Recurrent Pregnancy Loss v0.226 MTHFR Zornitza Stark Gene: mthfr has been classified as Amber List (Moderate Evidence).
Infertility and Recurrent Pregnancy Loss v0.226 MTHFR Zornitza Stark Phenotypes for gene: MTHFR were changed from Recurrent pregnancy loss susceptibility to Homocystinuria due to MTHFR deficiency MIM#236250; Recurrent pregnancy loss susceptibility
Infertility and Recurrent Pregnancy Loss v0.225 MTHFR Zornitza Stark Classified gene: MTHFR as Amber List (moderate evidence)
Infertility and Recurrent Pregnancy Loss v0.225 MTHFR Zornitza Stark Gene: mthfr has been classified as Amber List (Moderate Evidence).
Infertility and Recurrent Pregnancy Loss v0.103 MTHFR Jasmine Chew gene: MTHFR was added
gene: MTHFR was added to Infertility and Pregnancy Loss. Sources: Literature
Mode of inheritance for gene: MTHFR was set to MONOALLELIC, autosomal or pseudoautosomal, NOT imprinted
Publications for gene: MTHFR were set to 37260775; 39534907; 38322638
Phenotypes for gene: MTHFR were set to Recurrent pregnancy loss susceptibility
Review for gene: MTHFR was set to AMBER
Added comment: PMID: 37260775- RPL5 couple was found to be carriers for mutation in the MTHFR gene. It is already known that women with a MTHFR variant have a higher risk for pregnancy-related issues such as miscarriages, preeclampsia, or a baby born with birth defects, such as spina bifida. The theory behind the connection between the MTHFR mutation and pregnancy loss is that tiny blood clots are formed because of homocysteinemia, which blocks the flow of nutrition to the placenta, essentially starving the fetus and triggering a spontaneous abortion (Dell’dera et al., 2018- PMID: 29435277).

ii) PMID: 39534907- The MTHFR C677T variant showed strong associations with unexplained RPL, particularly the CT genotype (OR: 6.07, 95% CI: 3.00-12.93; p < 0.001) and TT genotype (OR: 14.62, 95% CI: 2.85-114.77; p = 0.003) in Vietnamese population.

iii) PMID: 38322638- 6.2% of couples with a history of RPL had MTHFR C677T in an Iranian population

Note: MTHFR is a thrombophilic marker and DNA methylation- PMID: 34745108).
Sources: Literature