Skip to main content
RETFusionDraft, not yet medically reviewed

RET fusion

A rare fusion that can be targeted with selective RET inhibitors.

Parent marker: RET

Not a diagnosis and not final medical advice. Must be reviewed by a doctor.

Clinical meaning

RET fusion activates a signaling pathway that can be selectively inhibited. This group is among those with the clearest benefits if discovered.

How this finding appears in a report

Found via sequencing panel or FISH, with confirmation if necessary.

When therapy stops working

Changes in the RET kinase domain are one of the mechanisms sought after progression.

What needs verification

  • Complete variant name as written in the laboratory report.
  • Examination methods and types of samples used.
  • Examination dates were compared with ongoing therapy.

Marker context: RET

RET fusion in non-small-cell lung cancer is discussed in the category of RET inhibitors. These findings are usually part of a broader sequencing panel.

A negative result does not always mean absent

Test sensitivity differs by sample type and method. Results need to be read together with the pathology report and clinical condition.

Summary

Gen
RET
Variant
RET rearrangement
Alteration type
Fusion
Discussed in
Lung Cancer, Stomach Cancer
Updated
2026-09-10

Other names in reports

RET fusion, KIF5B-RET

Treatment categories

Clinical trials

Studies mentioning marker RET

Filtered from public study descriptions. Access status and site readiness remain unverified.

Next steps

These suggestions come from links between entries in TanyaKanker's database, not from a medical judgement. Each suggestion includes why it appears.

Next to learn

To check

What you can do

  • Upload medical reports

    Build a case summary in twelve steps

    Reason: Often the most useful next step after reading this page

  • Request a second opinion

    Review of the treatment plan

    Reason: Relevant when a treatment plan is being considered

  • Consult a navigator

    A request is recorded with this page context

    Reason: For asking the next step directly

Recently updated

Want to follow changes on this topic? Save the page or follow the topic so it is easy to find again. View saved items.

Prepare for your next consultation

Use the free six-question tool to prepare questions for your doctor.