“…We demonstrated how this transition reveals an accelerated decline in GFR among Black patients following nephrectomy, which supports the consideration of early nephrology referral to maximize renal function and prevent chronic kidney disease upstaging. 2 Although not discussed, it is important to mention the potential oncologic implications of nonerace-based GFR equations in Black patients during this surveillance period. Given the risk of recurrence or secondary malignancy, which may require additional medical or surgical treatment, GFR is an important factor in determining eligibility for certain therapies and clinical trials.…”