TITLE

Carbonic anhydrase IX expression in renal neoplasms: correlation with tumor type and grade

AUTHOR(S)
Genega, Elizabeth M.; Ghebremichael, Musie; Najarian, Robert; Yineng Fu; Yihong Wang; Argani, Pedram; Grisanzio, Chiara; Signoretti, Sabina; Fu, Yineng; Wang, Yihong
PUB. DATE
December 2010
SOURCE
American Journal of Clinical Pathology;Dec2010, Vol. 134 Issue 6, p873
SOURCE TYPE
Academic Journal
DOC. TYPE
journal article
ABSTRACT
Carbonic anhydrase IX (CAIX), a hypoxia-induced protein, is expressed in some renal tumors. We evaluated its immunohistochemical expression in 317 primary and 42 metastatic renal neoplasms (186 clear cell, 52 papillary, 35 chromophobe, 47 unclassified, and 15 Xp11.2 translocation renal cell carcinomas [RCCs]; 26 oncocytomas; 2 metanephric adenomas; 1 urothelial carcinoma; 1 mixed epithelial and stromal tumor; and 1 angiomyolipoma); 7 neoplasms were unknown as to whether they were primary or metastatic. We also correlated expression with tumor type and grade. Variable staining was seen in clear cell, papillary, unclassified, and Xp11.2 translocation carcinomas. One chromophobe carcinoma had focal expression. No staining was seen with other tumors. An association was found between high expression and clear cell vs non-clear cell carcinomas with all cases (P < .01) and primary (P < .01) cases. An association between CAIX expression and grade (P < .01) in primary clear cell carcinomas was found. CAIX expression is more common in clear cell RCC than other renal tumor types and is associated with grade.
ACCESSION #
70091345

 

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