[Management of the Oncological Patient with Chronic Renal Failure].

Cancer is a leading cause of death in people with chronic kidney disease (CKD). The incidence of CKD in patients with cancer is higher than in the non-cancer population. Across various populations, CKD is associated with an elevated risk of cancer incidence and cancer death compared with people without CKD, although the risks are cancer site-specific. The potential mechanisms for the increased risk of cancer observed in CKD, include patient factors, disease, and treatment factors. CKD has also a major impact on the treatment of cancer patients. The kidney is the primary route of elimination of many anticancer drugs. Dosing of anticancer agents according to kidney function is essential to avoid undertreatment and toxicity. Because of the systemic exclusion of patients with severe kidney dysfunction from clinical cancer trials, data are lacking to guide dosing of anticancer drugs in patients with chronic kidney disease. As a consequence, many therapies are denied to CKD patients due to their possible toxicities. An orchestrated effort by all stakeholders is required to fill the knowledge gap and improve the outcome of cancer patients with kidney dysfunction.

Daratumumab monotherapy for refractory lupus nephritis.

Treatment-refractory lupus nephritis (LN) has a high risk of a poor outcome and is often life-threatening. Here we report a case series of six patients (one male and five females) with a median age of 41.3 years (range, 20-61 years) with refractory LN who received renal biopsies and were subsequently treated with intravenous daratumumab, an anti-CD38 monoclonal antibody (weekly for 8 weeks, followed by eight biweekly infusions and up to eight monthly infusions). One patient did not show any improvement after 6 months of therapy, and daratumumab was discontinued. In five patients, the mean disease activity, as assessed by the Systemic Lupus Erythematosus Disease Activity 2000 index, decreased from 10.8 before treatment to 3.6 at 12 months after treatment. Mean proteinuria (5.6 g per 24 h to 0.8 g per 24 h) and mean serum creatinine (2.3 mg dl-1 to 1.5 mg dl-1) also decreased after 12 months. Improvement of clinical symptoms was accompanied by seroconversion of anti-double-stranded DNA antibodies; decreases in median interferon-gamma levels, B cell maturation antigen and soluble CD163 levels; and increases in C4 and interleukin-10 levels. These data suggest that daratumumab monotherapy warrants further exploration as a potential treatment for refractory LN.