# Kidney cancer models matched immunotherapy responses in a six-patient cohort

_Published Wednesday, October 28, 2026 at 2:16 PM EDT · Science · Latest · Tier 2 — Notable_

Patient-specific kidney cancer assembloids, models combining cancer cells, fibroblasts and immune cells, reproduced treatment responses in a six-patient cohort in a Nature study.

After 7 days of anti-PD-1 treatment, models from four patients showed tumour reduction; models from two did not show significant tumour cell death. Those responses matched the patients' clinical outcomes.

Manipulating individual components exposed a signalling mechanism: tumour-derived WNT prompts fibroblasts to produce activin A, supporting stem-like CD8+ T cells and treatment responsiveness. Restoring LRP6 expression in fibroblasts from non-responders restored responsiveness in the models.

## Sources

- [Nature](https://www.nature.com/articles/s41586-026-11208-w)

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Canonical: https://techandbusiness.org/newswire/eM7Yy2pkPsmTSV-RQUpTGU
Published: 2026-10-28T18:16:47.945Z
Story chronology: 2026-10-28T00:00:00.000Z
Retrieved: 2026-10-28T22:06:48.986Z
Publisher: Tech & Business (techandbusiness.org)