Comparative evaluation of the Omniplex-HPV and RFMP HPV PapilloTyper for detecting human papillomavirus genotypes in cervical specimens

Comparison of clinical performance of two high-throughput liquid bead microarray assays, GeneFinder and CareGENE, for cervical screening in the general population

Recently, a clinical need for an improved human papilloma virus (HPV) test that covers a broad range of genotypes has emerged as a valuable primary screening tool for cervical lesions. The liquid bead microarray (LBMA) assay is a recently developed high-throughput platform covering a broad range of genotypes. Here, we compared the clinical performance of two recently developed LBMA assays, GeneFinder^TM HPV Liquid Bead Microarray (GeneFinder) and CareGENE^TM HPV genotyping kit-O (CareGENE), in the Korean general population. A total of 3,148 cervical swabs were tested by the GeneFinder and CareGENE assays. Cases with discrepant results between the two assays were subjected to direct sequencing as a reference method for evaluating the performance of the two LBMA assays. Among all swabs tested, 12.6% showed HPV positivity, and the prevalent HPV genotypes were HPV53, 70, 16, 39, and 51, in that order. The concordance rates between the two assays for the detection of HPV and for genotyping were 96.6% (kappa = 0.836) and 94.5% (kappa = 0.779), respectively. The two LBMA assays showed comparable sensitivity and specificity for HPV detection (GeneFinder: sensitivity 94.4% and specificity 98.7%, CareGENE: sensitivity 89.8% and specificity 99.6%) and for genotyping (GeneFinder: sensitivity 91.0% and specificity 96.6%, CareGENE: sensitivity 90.2% and specificity 99.1%). This is the first demonstration that CareGENE has comparable clinical performance to GeneFinder, which has been established to show excellent performance for screening HPV in previous studies. Both LBMA platforms are thus considered to be valuable tools for HPV detection and genotyping to improve cervical screening in the general population.

Knowledge, attitude, and practice about cervical cancer and its screening among community healthcare workers of Varanasi district, Uttar Pradesh, India

Context:

Cervical cancer is most common type of cancer in women of rural India. More than 60-70% of cancers are diagnosed in later stages with poor survival rate. Screening helps in early detection of cervical cancer and better survival. Awareness and attitude of women towards cervical cancer screening may determine health-seeking behavior. As per operational framework of cancer screening in India, community health workers will be key mobilizers for encouraging women to undergo cervical cancer screening.

Aim:

This study aims to assess the knowledge, attitude and practice (KAP) of cervical cancer and its screening amongst community health workers of Varanasi district, Uttar Pradesh.

Settings and Design:

Descriptive, cross-sectional study was done to assess the socio demographic profile and KAP for cervical cancer and its screening of community health workers. Scoring for awareness and attitude for cervical cancer screening was done.

Statistical Analysis Used:

Descriptive statistics such as mean±SD, frequency and proportion were used for socio-demographic data and KAP of study population. Determinants of knowledge and practice for screening was determined using Chi-square test. P value < 0.05 was considered statistically significant.

Results:

We observed that despite of good knowledge and perception less than 10 percent of workers have undergone screening. Significant association was seen between level of knowledge and practice of screening.

Conclusion:

It is of utmost importance that narrowing of existing gap between the perception and practice of cervical cancer screening should be initiated through introducing more educational programs for workers and encouraging them to participate in screening campaigns.

Genetic diversity and phylogenetic analysis of HPV 16 & 18 variants isolated from cervical specimens of women in Saudi Arabia

Human papillomavirus (HPV) are well known to be associated with the development of cervical cancer. HPV16 and HPV 18 are known as high-risk types and reported to be predominantly associated with cervical cancer. The prevalence and genetic diversity of HPV have been well documented globally but, in the Kingdom of Saudi Arabia, data on HPV genetic diversity are lacking. In this study, we have analyzed the genetic diversity of both HPV16 and HPV18 based on their L1 gene sequence because L1 gene is a major capsid protein gene and has been utilized to develop a prophylactic vaccine. In January 2011-2012, a total of forty samples from cervical specimens of women in Saudi Arabia were collected. The association of HPV16, HPV18 was detected by polymerase chain reaction, sequenced and submitted to GenBank. The sequences identity matrix and the phylogenetic relationship were analyzed with selected HPVs. The highest sequence identity (99.5%) for HPV16 and (99.3%) for HPV was observed with selected HPVs. The phylogenetic analysis results showed that HPVs from Saudi Arabia formed a closed cluster with African, Asian, East Asian as well as American HPVs distributed into multiple linages from various geographical locations. The results provided the valuable information about genetic diversity, but there is an urgent need to generate full genome sequence information which will provide a clearer picture of the genetic diversity and evolution of HPVs in Saudi Arabia. In conclusion, the generated data will be highly beneficial for developing molecular diagnostic tools, analyzing and correlating the epidemiological data to determine the risk of cervical cancer and finally to develop a vaccine for Saudi Arabian population.