CLDN18.2 immunohistochemistry
A staining test to assess CLDN18.2 expression in stomach cancer.

Not a diagnosis and not final medical advice. Must be reviewed by a doctor.
Purpose of the test
- Assess the percentage and intensity of CLDN18.2 expression.
- Becomes the basis for discussing specific antibody therapy.
Informs decisions
- Compliance with clinical trial and therapy criteria regarding CLDN18.2.
How the test is done
Anti-CLDN18.2 antibody staining of tumor tissue.
- Sample type
- Block tumor tissue
- Estimated result time
- Generally one to two weeks.
Limitations
- Assessment thresholds are still evolving and may vary between facilities.
- Reporting needs to state percentage and intensity, not just positive or negative.
Related
Cancer types
Markers tested
Not displayed
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Sources
- NCI Dictionary of Cancer Terms(lembaga)
Next steps
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To check
- Stomach Cancer
Cancer type
Reason: Memerlukan pemeriksaan
- CLDN18.2
Biomarker
Reason: Diperiksa melalui
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Complete pathway
CLDN18.2 in stomach cancer
A CLDN18.2 result is positive. What does it mean and what is worth discussing with the medical team?
- CLDN18.2 markerStarting point: what this marker shows and what it does not decide by itself.
- CLDN18.2 positiveWhat a positive result means under the pathology testing threshold.
- CLDN18.2 IHCA common testing method, including on stored tissue blocks.
- After chemotherapy stops workingThe decision situation when first-line therapy no longer controls the disease.
- ZolbetuximabAn anti-CLDN18.2 therapy approved in several countries and given with chemotherapy.
- Positive CLDN18.2 result guideMeaning of the result, approved options versus investigational ones, and questions for the doctor.
A structured summary so IHC results and treatment history are readable.
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