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Louis Prevost Battles Multiple Myeloma Amid Pope s

PUBLISHED Oct 13, 2026, 11:34 PM ET

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Louis Prevost, Pope Leo XIV’s older brother who lives in Florida, has multiple myeloma, his wife Deborah told CBS News on Tuesday. The diagnosis first emerged in two thousand seventeen and was kept at a very low level after stem‑cell treatment and a clinical trial in two thousand nineteen. Three months ago, the disease fell out of remission, prompting a new trial at a local hospital. Meanwhile, Pope Leo underwent surgery that confirmed lung adenocarcinoma, with the Vatican noting the diagnosis earlier that day. The family, already coping with the pope’s lung cancer, remains hopeful that early intervention will help both brothers. They keep praying and keeping spirits up for both of them, Deborah said. The story highlights the broader impact of cancer on high‑profile families and the importance of clinical research, underscoring how early trials can offer hope even when remission is lost.

By Elena V. | JQJO News

Timeline of Events

2017 — Louis diagnosed with multiple myeloma

News Intelligence

Immediate US impact: High‑profile cancer cases raise public awareness.
Possible long-term US impact: Increases funding for clinical trials nationwide.
Most affected groups: Families of public figures and oncology patients.
Reader priority: Understand clinical trial progress and family impact.

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Center: Coverage from NewsBreak frames this as a developing news story: Louis Prevost Battles Multiple Myeloma Amid Pope s. Reporting emphasizes verified facts, named sources, and near-term impact for readers. Left: Left-leaning desks covering the same development typically emphasize public impact, institutional accountability, and who is most affected. Right: Right-leaning desks covering the same development typically emphasize practical outcomes, market or security stakes, and institutional response.