Management of Metastatic Renal Cell Carcinoma with Variant Histologies

Ronan Flippot1, Vijay Damarla2, Bradley A McGregor3

  • 1Dana-Farber Cancer Institute, Lank Center for Genitourinary Oncology, 450 Brookline Avenue, Boston, MA 02215, USA; Department of Cancer Medicine, Gustave Roussy, 114 rue Edouard Vaillant, Villejuif 94800, France.

Insights

Variant histology renal cell carcinoma (vRCC) has poor prognosis but new molecular insights reveal targetable alterations. Emerging therapies show promise for these rare kidney cancer subtypes.

Area of Science:

  • Oncology
  • Genetics
  • Molecular Biology

Background:

  • Variant histology renal cell carcinoma (vRCC) comprises rare non-clear cell subtypes.
  • vRCC is historically linked to poor prognosis and resistance to anti-VEGF therapies.

Purpose of the Study:

  • To review molecular classifications and therapeutic targets in vRCC.
  • To highlight emerging targeted therapies and immunotherapies for vRCC.

Main Methods:

  • Review of molecular alterations in vRCC subtypes.
  • Analysis of current and developing targeted therapies and immunotherapies.
  • Discussion of clinical trial strategies for vRCC.

Main Results:

  • Molecular advances have classified vRCC and identified targets like MET.
  • Alterations in tumor metabolism, chromatin remodeling, cell cycle, and tumor suppressors (TP53, NF2) are implicated.
  • New targeted therapies and immune checkpoint inhibitors show encouraging results.

Conclusions:

  • Understanding vRCC molecular drivers is crucial for treatment.
  • Emerging therapies offer new hope for patients with vRCC.
  • Collaborative clinical trials are essential for advancing vRCC treatment strategies.