A 7.5-year prospective study of longer than 18 months type-specific human papillomavirus persistence in a routine cytology-based cervical screening population of about 31,000 women in West Germany.

The objective of this study was to analyse the prevalence, infection pattern, duration and outcome of long-term, type-specific, persistent human papillomavirus (HPV) infections in a routine cytology-based cervical screening population of West German women followed up for 7.5 years. From a screening population of 31,000 women, a strictly selected cohort of 100 patients with > or =18-month persistent, type-specific HPV infection were prospectively followed up for a mean of 35.

Prevalence and genotype distribution of multiple human papillomavirus infection in the uterine cervix: a 7.5-year longitudinal study in a routine cytology-based screening population in West Germany.

The availability of vaccines against certain HPV types and the development of broad spectrum genotyping methods have increased interest in co-infections with different HPV types. In the present study, the prevalence and type-specific composition of multiple HPV infections were investigated in a routine cervical screening population in West Germany both at a cross-sectional level and longitudinally. Four hundred eighty-nine out of 8,090 women were diagnosed with multiple HPV infections once or repeatedly.

Predictive testing of early cervical pre-cancer by detecting human papillomavirus E6/E7 mRNA in cervical cytologies up to high-grade squamous intraepithelial lesions: diagnostic and prognostic implications.

The type-specific persistence of oncogenic human papillomavirus (HPV) is considered to be the true precursor of cervical cancer at which the transcription of the viral oncogenes E6 and E7 is necessary for the malignant transformation and maintenance of the neoplastic state. In the present pilot study, a cohort of 66 women was investigated from a routine office-based screening population who had an index cytological result from normal to high-grade squamous intraepithelial lesions and who were also HPV-DNA positive for at least one of the following high-risk HPV types: HPV 16, 18, 31, 33 and 45 detected by MY09/MY11 consensus and GP5+/6+ general primers, followed by sequencing. The expression of E6/E7 transcripts from the same HPV types was detected by the PreTect HPV-Proofer.

Inter-laboratory validation of PCR-based HPV detection in pathology specimens.

The detection and typing of human papilloma virus (HPV) in pathology specimens is gaining increasingly in importance. In the context of the initiative for quality assurance in pathology (QuIP) of the German Society of Pathology and the Professional Association of German Pathologists, four panel laboratories with experience and expertise in polymerase chain reaction (PCR)-based HPV detection were selected to establish an inter-laboratory trial. In a first step, these laboratories performed an internal testing of their own methodologies, which comprised DNA sequencing, multiplex nested PCR and hybridization techniques.