A patient presents with recurrent venous thromboembolism and is found to have a mutation in the gene encoding for methylenetetrahydrofolate reductase (MTHFR). What is the most likely underlying condition contributing to this patient's thrombophilic state?

The MTHFR gene mutation can lead to hyperhomocysteinemia, a condition characterized by elevated levels of homocysteine in the blood. Hyperhomocysteinemia is a known risk factor for venous thromboembolism because it can damage the endothelium and promote blood clotting.