The expanding role of complement inhibitors in the treatment of IgA nephropathy.

Caravaca-Fontán, Fernando; Praga, Manuel · Kidney Int · 2026

review · Level V

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Abstract

Complement activation has emerged as a key driver of IgA nephropathy, catalyzing the rapid expansion of complement-targeted therapies. Barbour et al. reported promising phase 2 results of sefaxersen, an antisense inhibitor of Factor B, showing reduced proteinuria, improved hematuria, and sustained alternative-pathway inhibition. Nonetheless, as the therapeutic landscape expands, advancing precision medicine in IgA nephropathy will require defining appropriate patient profiles and predictors of therapeutic response to guide individualized treatment.

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