Maspin inhibits metastasis of some cancer cells, and clinical studies have identified correlations between maspin loss and poor prognosis in several cancer types. Maspin was found to be significantly overexpressed in lung cancer samples as compared with matched normal lung tissues. However, the regulatory mechanism of maspin expression remains unclear. We show here that differential expression ...

The pathologic distinction of atypical fibroxanthomas (AFXs) from cutaneous spindle cell/sarcomatoid squamous cell carcinomas (SCSCCs) may occasionally pose a significant diagnostic challenge, given the substantial clinicopathologic overlap between these lesions. Recent studies indicate that p63 and CD10 are expressed in significant proportions of SCSCC and AFX, respectively. The purpose of thi...

AIMS One of the limitations of fine needle aspiration biopsy (FNAB) of the breast is in distinguishing invasive carcinoma (IDC) from ductal carcinoma in situ (DCIS). It has been proposed that the presence of myoepithelial cells overlying epithelial malignant cell clusters suggests DCIS. However, the recognition of myoepithelial cells in aspirates may be difficult. The aim of this study was to i...

BACKGROUND Distinguishing urothelial carcinoma (UC) from prostate carcinoma (PC) is important due to potential therapeutic and prognostic implications. However, this can be a diagnostic challenge when there is limited tissue and in poorly differentiated tumors. We evaluated the diagnostic utility of a dual immunohistochemical stain comprising p63 and P501S (prostein), applied sequentially on a ...

The AEC syndrome or Hay wells is an unusual autosomal dominant disorder characterised by Ankyloblepharon, Ectodermal dysplasia and Cleft palate and/or lip. This occurs as a result of missense mutation in TP63 affecting P63 SAM the gene, which protein-protein interaction domain. It associated with some irregularities like /Cleft lip, severe scalp erosions abnormalities epidermal appendages inclu...

Human bladder exstrophy-epispadias complex (BEEC) comprises a spectrum of urogenital anomalies in which part or all of the distal urinary tract fails to close. Several lines of evidence implicate genetic factors in the formation of BEEC. Among them a murine p63+/+ knockout model showed the full picture of classic exstrophy of the bladder and other urogenital defects within the BEEC spectrum. Th...

This report describes two cases of sebaceous epithelioma and its immunohistochemical characterization with CK 14, CK18, p63, Ki67 and Bcl-2 immunostaining. Case 1 was a 12-year-old, intact English Cocker spaniel female presenting with multiple skin nodules over one year. Case 2 was a 7-year-old, spayed poodle female with a five-month history of solitary mass. Hematoxylin and eosin (H&E) stainin...

Women exposed to diethylstilbestrol (DES) in utero develop abnormalities, including cervicovaginal adenosis that can lead to cancer. We report that transient disruption of developmental signals by DES permanently changes expression of p63, thereby altering the developmental fate of Müllerian duct epithelium. The cell fate of Müllerian epithelium to be columnar (uterine) or squamous (cervicovagi...

AIMS p63 is one of the standard markers for basal cells of the prostate gland. Recently, it has been suggested that the p63 isoform p40 might be more specific as a basal cell marker. In this study we compare the staining characteristics of p63 and p40 in normal and malignant prostate tissues. METHODS AND RESULTS A prostatectomy cohort (n = 640) in tissue microarray format was evaluated for p6...