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        The retinoblastoma protein/p16INK4A pathway but not p53 is disrupted by human papillomavirus in penile squamous cell carcinoma

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        Stankiewicz_et_al_2011_Pre_Print_Histopathology.pdf (PDF, 180Kb)
        Author
        Stankiewicz, Elzbieta
        Prowse, David M.
        Ktori, Elena
        Cuzick, Jack
        Ambroisine, Laurence
        Zhang, Xiaoxi
        Kudahetti, Sakunthala
        Watkin, Nicholas
        Corbishley, Catherine
        Berney, Daniel M.
        Attention
        2299/16101
        Abstract
        Aims: The pathogenesis of penile squamous cell carcinoma (PSCC) is not well understood. Human papillomavirus (HPV) may be involved in carcinogenesis, but few studies have compared cell-cycle protein expression in HPV positive and negative cancers. The aim was to determine the extent of HPV infection in different histological subtypes of PSCC and its impact on the expression of key cell-cycle proteins: p53, p21, p16INK4A and retinoblastoma (RB) protein. Methods and results: One hundred and forty-eight PSCC samples were examined immunohistochemically for RB, p16INK4A, p53 and p21 protein expression. One hundred and two cases were typed for HPV by PCR. HPV DNA was detected in 56% of tumours, with HPV16 present in 81%. Basaloid tumours were related strongly to HPV infection (10 of 13), while verrucous were not (three of 13). Fifty-nine per cent (38 of 64) of usual type SCCs had HPV infection. RB protein correlated negatively (P<0.0001) and p16INK4A (P<0.0001) and p21 (P=0.0002) correlated positively with HPV infection. p53 did not correlate with HPV infection. Conclusions: HPV infection is present in more than half of penile cancers and it is responsible for RB pathway disruption. However, no link between HPV and p53 immunodetection was found. Only basaloid and half of usual-type PSSCs correlate with HPV infection, confirming possible separate aetiologies for those tumours.
        Publication date
        2011-02-01
        Published in
        Histopathology
        Published version
        https://doi.org/10.1111/j.1365-2559.2011.03762.x
        Other links
        http://hdl.handle.net/2299/16101
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