Interpreting the hazard ratio, a higher Beclin-1 expression in adjunctively treated MCTs indicates what?

• A. No difference in risk
• B. Higher risk of death
• C. Lower risk of death
• D. No effect on disease progression

Answer: (B)

When you interpret a hazard ratio in survival analysis, you’re looking at the relative instantaneous risk of the event occurring at any moment during follow-up. A hazard ratio greater than 1 means higher hazard in the group being studied compared to the reference group, while a hazard ratio less than 1 means lower hazard, and a value around 1 means no difference.

Here, higher Beclin-1 expression in adjunctively treated mast cell tumors is associated with a hazard ratio for death that is above 1. That means patients (or tumors) with elevated Beclin-1 have a greater risk of dying at any given time point during the study than those with lower Beclin-1 expression. So the correct interpretation is that higher Beclin-1 expression indicates a higher risk of death.

Beclin-1 is involved in autophagy, and its role in cancer can vary. In this context, the association with worse survival suggests that increased Beclin-1 expression may reflect mechanisms (like enhanced autophagic survival of tumor cells under treatment) that lead to poorer outcomes.