a 48-year-old man
Paraneoplastic membranous nephropathy (PLA2R/THSD7A/NELL-1 triple-negative) together with stage IV mantle cell lymphoma
He was treated for the lymphoma alone with R-CHOP and R-DHAP chemotherapy to start, then an autologous stem cell transplant, and extended rituximab maintenance. Treating the cancer alone brought the kidney disease into remission, with kidney function preserved.
In one man, treating his mantle cell lymphoma alone put his kidney disease into remission too, because the cancer was what was driving the kidney damage.
- His kidney problem (membranous nephropathy) was paraneoplastic, meaning it was caused by his cancer rather than being a separate disease.
- He got no medicine aimed directly at his kidneys; the lymphoma treatment alone fixed both.
- His proteinuria dropped from 7.38 to 0.29 grams per 24 hours and his serum albumin rose from 26.2 to 35.5 g/L, so his nephrotic syndrome resolved.
- His kidney function stayed preserved even through heavy treatment, including a stem cell transplant.
- Both the lymphoma and the kidney disease stayed in remission for more than 2 years.
Why it might work
The paper frames this kidney disease as paraneoplastic, which means the tumor itself was the cause. His membranous nephropathy tested negative for the usual antibody targets (PLA2R, THSD7A, and NELL-1), so it was not one of the more common antibody-driven forms. When the lymphoma is the engine behind the kidney injury, removing or shrinking the cancer removes the cause, and the kidney can recover on its own. That is why the doctors treated the lymphoma with chemotherapy, a stem cell transplant, and rituximab maintenance, and the kidney disease settled down as the cancer went into remission.
The honest limits
- This is a single case (n=1), so it does not tell us how often this happens or whether it would work for others.
- This kidney disease was tied to a specific cancer (mantle cell lymphoma); most membranous nephropathy is not paraneoplastic, so this path does not apply to most patients.
- The abstract says kidney function was preserved but does not report an actual GFR number or how it was measured.
- The abstract lists no funding or conflict-of-interest disclosures, so none are stated either way.
- Could my kidney disease be linked to another underlying condition, such as a cancer, rather than standing on its own?
- Have I been tested for the PLA2R, THSD7A, and NELL-1 antibodies, and what did the results mean for my treatment plan?
- If a cause for my kidney disease is found and treated, is remission of the kidney problem a realistic goal for me?