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ROS1FusionDraft, not yet medically reviewed

ROS1 fusion

A rare fusion that opens the ROS1 inhibitor category in non-small-cell lung cancer.

Parent marker: ROS1

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

Clinical meaning

ROS1 fusion activates growth signaling pathways. This group is discussed with ROS1 inhibitors, including drugs that are active against brain involvement.

How this finding appears in a report

Often found in sequencing panels that include RNA or via FISH, with confirmation by orthogonal methods when necessary.

When therapy stops working

Changes in the ROS1 kinase domain and activation of the alternative pathway are part of the re-examination.

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: ROS1

ROS1 fusions make the category of ROS1/ALK inhibitors relevant for discussion in advanced non-small-cell lung cancer, depending on other findings and patient condition.

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
ROS1
Variant
ROS1 rearrangement
Alteration type
Fusion
Discussed in
Lung Cancer
Updated
2026-09-10

Other names in reports

ROS1 fusion

Treatment categories

Clinical trials

Studies mentioning marker ROS1

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

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