Vitamin D Supplements to Improve Treatment Response in Triple Negative Breast Cancer

This trial is testing whether vitamin D3 supplementation can improve how well chemotherapy works for people with triple negative breast cancer who have low vitamin D levels. Participants will either receive weekly high-dose vitamin D3 alongside their standard chemotherapy, or standard chemotherapy alone (if their vitamin D levels are already normal). The researchers want to see if this medication helps more patients achieve a complete response to treatment.

Triple negative breast cancer is harder to treat than other types of breast cancer, and not all patients respond well to chemotherapy alone. Early research suggests that vitamin D may play a role in how the body fights cancer, so this trial is testing whether adding this treatment could improve outcomes for patients with low vitamin D levels.