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Melanoma Associated Antigen KBA.62 [KBA.62]

Ref: AP10435C - Clone: KBA.62 - Host: Mouse - Method: P,F - Format: Concentrated
DS  Imagen 1   MSDS  Imagen 2
Manufacturer: Gennova
Description

SUMMARY, EXPLANATION AND LIMITATIONS:
Anti-KBA.62 (Melanoma Associated Antigen) is a novel anti-melanoma antibody. Studies thus far have shown a similar sensitivity to melanocytic proliferations as that seen with S-100 protein staining, which is somewhat higher than that seen with HMB-45. This has been confirmed by one study on a series of 215 sentinel lymph nodes. Moreover, anti-KBA.62 identified 6 patients (3%) who had confirmed sentinel lymph node metastasis but stained negative for HMB-45. In this setting, the resolution appears to be higher than S-100 protein in that the staining pattern (membranous) is quite distinct. Interestingly, most cases of desmoplastic and spindle cell melanomas show strongly positive results with anti-KBA.62, unlike that seen with other melanocyte markers. It should be noted that anti-KBA.62 will label occasional endothelial cells which can serve as an internal positive control. A small percentage of well-differentiated squamous cell carcinomas of the skin (and lung) have also been noted to stain with this antibody; however, the poorly-differentiated forms of carcinoma do not, thus resolving a greater practical problem in differential diagnosis. Therefore, anti-KBA.62 is a useful additional marker for melanoma, specifically in desmoplastic/spindle cell cases and in the context of micrometastasis in sentinel lymph node.

Clone: KBA.62
Isotype: IgG1
Immunogen: Human Melanoma Associated Antigen.
Staining pattern: Cell membrane.
Positive control: Tissue sample from melanoma.

APPLICATIONS:
This antibody is designed for the specific localization of human melanoma associated antigen KBA.62 using IHC techniques in formalin-fixed, paraffin-embedded tissue sections.

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