Is VKORC1 useful for Fruchtbarkeit?

VKORC1 encodes vitamin K epoxide reductase, primarily known for its role in blood coagulation and warfarin sensitivity. The provided context contains no information linking VKORC1 to fertility. Scientific literature does not support a robust association between VKORC1 variants and human fertility. While vitamin K metabolism may have indirect effects (e.g., on bone health or vascular calcification), there is no evidence that VKORC1 genotyping is useful for assessing or improving fertility. Consumer DNA tests that include VKORC1 for fertility purposes are not evidence-based. The evidence grade is 'unclear' due to lack of relevant studies. For fertility concerns, validated clinical assessments (hormone panels, semen analysis, imaging) remain the standard. Consumers should be cautious about overinterpreting single-gene results from direct-to-consumer tests.