Anatomical Pathology Special Stains and Immunohistochemistry
RCPAQAP myQAP login Data Analysis

WT1 (Wilm tumour-1 protein)

Platform
Dako OMNIS
Clone/manufacturer
6F-H2 (IR055 - Dako Agilent)
Antibody dilution
Predilute
Antibody incubation time/temp
20 mins at 32°C
Antigen retrieval buffer time/temp
Dako Envision High pH FLEX 20 mins at 97°C
Amplification
Not applicable
Detection kit
GV800 Dako Omnis DAB
Program (mark)
General 2016 (4.8/5)

Wilms Tumor (WT), a sporadic and familial childhood kidney tumor, is genetically heterogeneous. Wilms tumor is associated with mutations of WT1, The WT1 gene is normally expressed in fetal kidney and mesothelium, and its expression has been suggested as a marker for Wilms tumor and mesothelioma (1-2).

Recommended Controls

The criteria for acceptable staining is nuclear. The recommended controls to include is fallopian tube, kidney and ovarian serous carcinoma or prostate cancer. Fallopian tube will show strong staining in all epithelial and smooth muscle cells; kidney will show nuclear staining in podocytes while the epithelial cells of the tubules will be negative. Ovarian serous carcinoma is a strong expressor while the prostate cancer will show no staining in the tumour cells.


Serous adenocarcinaoma

Disclaimer

These methods are intended as a guide only. Laboratories that wish to implement these methods should perform internal validation/verification prior to use. The RCPAQAP does not make any claim or warranty for the accuracy or performance of these methods.

References
  1. ThermoScientific Specification data sheet https://static.thermoscientific.com/images/D12357~.pdf

  2. Leong A.S-Y, Cooper K and Leong F.J. W-M. Manual of Diagnostic Antibodies for Immunohistology, 2nd edition. Greenwich Medical Media. ISBN: 1 84110 100 1. 1999. 447-448.

  3. Image of ovarian serous tumour_QAP survey.

Last updated on February 24, 2026
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