Neoplasms

Urinary Tract, Sexual Organs, and Pregnancy Conditions

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Urinary Bladder Neoplasms

Chromosomal Instability

Urologic Neoplasms

Urogenital Neoplasms

Urogenital Diseases

Female Urogenital Diseases

Pregnancy Complications

Female Urogenital Diseases and Pregnancy Complications

Urinary Bladder Diseases

Urologic Diseases

Male Urogenital Diseases

Chromosome Aberrations

Genomic Instability

All Drugs and Chemicals

BCG Vaccine

Patients with pathology-confirmed median to high risk urothelial carcinoma defined by 2023 EAU guideline, underwent transurethral resection of bladder tumor and receiving BCG instillation therapy.

Urine samples from patients receiving BCG instillation was collected for LC-WGS to evaluate CIN and urinary microbiome.

urine sample collection

Shuxiong Zeng, M.D., Ph.D.

Bacillus Calmette-Guerin (BCG) has been extensively utilized in intravesical instillation therapy for patients with medium to high risk non-muscle invasive bladder cancer (NMIBC) following transurethral resection of bladder tumor (TURBT). Nevertheless, the efficacy of BCG instillation can fluctuate between patients, with 40.5% experiencing disease recurrence during BCG therapy. The effectiveness of BCG instillation may be linked to the urinary microbiome and immune microenvironment. Additionally, small residual lesions post-TURBT could also result in bladder cancer recurrence. Low coverage whole genome sequencing (LC-WGS) can be used to detect the urinary microbiome and chromosomal instability (CIN), making it feasible to predict the recurrence or progression of bladder cancer during BCG instillation therapy. Here, we intend to evaluate the feasibility of detecting urine samples of bladder cancer patients receiving BCG instillation to predict the bladder cancer recurrence.

NMIBC at medium to high risk showcases a recurrence rate of 40.5% post-TURBT, thus necessitating frequent monitoring and bladder instillation. Among patients with medium to high-risk NMIBC, the preferred treatment is BCG. The high recurrence rate of this illness is associated with BCG's effectiveness and residual cancer, yet the full understanding of BCG installation's mechanism complicates the prediction of its efficacy among individuals with bladder cancer.

Previously, it was believed that the urinary system was sterile; however, recent high-throughput sequencing and enhanced quantitative urine culture have confirmed the presence of resident bacteria in the urine of healthy individuals. Microorganisms within the bladder have the potential to alter the immune microenvironment, consequently impacting the efficacy of BCG instillation.

CIN denotes continuous errors in chromosome separation during cell division, encompassing numerical and structural instability. Loss of the Y chromosome (LOY) represents a specific type of CIN associated with cancer prognosis. CIN serves as a hallmark of malignancies and can be employed to indicate the presence of minimal residual disease (MRD) subsequent to TURBT. Analyzing LOY can better elucidate the disease's progression, and more exploration is necessary to comprehend the significance of detecting CIN for predicting tumor recurrence.

LC-WGS is a cost-effective, efficient, and robust technique that can be used to analyze both microorganism and human genomes in urine samples. The microbiome is commonly detected using 16S ribosomal sequencing. Compared to 16S sequencing, LC-WGS provides advantages such as enhanced detection of bacterial species, diversity, and improved gene prediction. In the context of CIN and LOY detection, LC-WGS technology offers heightened sensitivity, low cost, and high throughput compared to traditional methods such as comparative genomic hybridization or fluorescence in situ hybridization.

In this prospective, single-arm observational clinical trial, the investigators aim to evaluate LOY, CIN, and the urinary microbiome detected by LC-WGS for the assessment of BCG instillation efficacy and NMIBC follow-up.

Urine samples were collected form bladder cancer patient and DNA was extracted from urine sediment.

Analyzing the Urine During BCG Instillation in Bladder Cancer Patients for Disease Followup

Analyzing the Urine Microbiome and Chromosomal Instability by Whole Genome Sequening in Bladder Cancer Patients During BCG Instillation for Disease Follow-up

Individual participant data are not public for privacy protection purpose. Data without private information may be provided on request.

Comparison of urinary microbiome between relapsed and non-relapsed patients during follow-up.

Comparison of LOY event frequency between relapse patients and non-relapse patients during follow-up.

Comparison of MRD reflected by CIN level in urine samples between relapsed and non-relapsed patients during follow-up.

Changhai Hospital

M.D., Ph.D

Infections

Uterine Cervical Neoplasms

Communicable Diseases

Papillomavirus Infections

Sexually Transmitted Diseases

Sexually Transmitted Diseases, Viral

Virus Diseases

DNA Virus Infections

Tumor Virus Infections

Genital Diseases

Disease Attributes

There are total 14 CSS groups among 8 participating countries: Bangladesh has 3 groups for CSS (urban CSS, rural CSS, displaced population CSS); Pakistan has 3 groups for CSS (urban CSS, rural CSS, commercial sex worker population CSS); Nepal has 1 nationally representative CSS; Sierra Leon has 1 rural CSS; Tanzania has 2 groups for CSS (pastoralists CSS, displaced population CSS); Ghana has 1 urban CSS; Zambia has 1 group for urban \& rural representative CSS; DR Congo has 2 groups for CSS (population representative sample for urban and rural CSS, displaced population CSS)

There are total 11 LS groups: Bangladesh has 2 LS groups (married women up to 25 years-old \& 26-35 years old); Sierra Leone has 2 LS groups (Young girls subject to child marriage/early pregnancy \& general population); Tanzania has 2 LS groups (fishing, mining/tuck stop community \& general population) Other 5 countries have 1 LS group in each country.

The qualitative sub-studies in five selected countries (Bangladesh, Nepal, Pakistan, Sierra Leone, DR Congo) will follow and draw on findings from the CSS, focusing on girls and women of different age strata as well as community members (including boys and men) and key informants in the health care system in each study site. Qualitative study methods will vary depending on the site and CSS findings, but will include both individual in- depth interviews (IDIs) (up to \~ 30 individuals per site), key informant interviews as well as multiple focus group discussions (FGDs) with \~6-8 participants/group. Detailed qualitative study methodology will be developed separately as another study protocol and adapted according to the procedures for each site.

When urine is collected as a sample in either CSS or LS, first flow urine samples will be collected

Urine Sample Collection

Self-collected Vaginal Swab will be collected by the participant under the supervision of a trained nurse or other health care worker.

Self-collected Vaginal Swab

If funding permits, a blood sample may be collected from participants in LS once during the follow-up period. If blood sample collection was not feasible during a visit, two additional attempts may be made to collect blood samples from LS participants during the subsequent follow-up visits.

Blood Samples

Julia Lynch

Quamrun Nahar

Hugo Kavunga

Sunila Shakya

Fyezah Jehan

Mohamed Samai

John Changalucha

Daniel Chulwoo Rhee

Deborah Watson-Jones

This study is a multi-country and multi-site project to estimate the point-prevalence of high-risk (HR) HPV genotype infections among representative samples of girls and women aged 9-50 years, and among specific sub-populations to estimate the incidence of persistent HPV infection among sexually active young women. The data to fulfill the objectives will be collected through a series of Cross-Sectional Surveys (CSS) and Longitudinal Studies (LS) in all 8 countries 3 South Asian countries including Bangladesh, Pakistan, Nepal and 5 sub-Saharan African countries including Sierra Leone, Tanzania, Ghana, Zambia and DR Congo. Qualitative sub-studies (QS) will be conducted in selected countries and populations following the CSS to further understand and unpack risk factors for HPV infection as well as to explore how gender-related dynamics including perceptions of gender norms and stigma, influence HPV burden and/or create barriers that shape girls/women access to and uptake of HPV prevention, screening, and treatment services. Specific study protocols and corresponding ethical applications for the qualitative sub-studies will be developed separately.

The study will incorporate a harmonized protocol among the 8 countries to estimate point-prevalence of high-risk HPV (HR HPV) in low socio-economic populations and, among specific sub-populations, the incidence of persistent HPV infection. Due to differences in study settings, study population, targeted age-group, and eligibility criteria, country-specific protocols will be developed to complement the multi-country master protocol. In the master protocol, general principles on study design and methodology will be described, while the country-specific protocol will elaborate in more detail on methodology in each country related to subject identification, the enrolment process, and laboratory analysis. A standardized survey questionnaire, with some minor country-specific adaptations, and laboratory assays will be implemented throughout the participating countries in order to generate comparable data.

Two separate approaches will be implemented to estimate prevalence and incidence respectively in each participating country. First, cross-sectional surveys (CSS) will be conducted in both urban and rural areas of selected countries in order to estimate the point prevalence of HPV infection in sub-Saharan Africa and South Asia. The CSS will enrol girls and women aged 9-50 years, with equal sample size from four age-strata: 9-14, 15-20, 21- 30, 31-50. For specific populations, age-strata will be modified to include 12-35 years olds considering the target population characteristics and local context. Multi-stage cluster random sampling or another applicable sampling strategy will be applied to ensure representativeness. Urine samples will be collected for HPV testing, along with data on demographics, socioeconomic status, sexual and reproductive history, attitudes towards and awareness and uptake of cervical cancer screening and HPV vaccination, and potential risk factors for HPV infection and cervical cancer. Additional data will be collected on knowledge of HPV, and attitudes, uptake and use of vaccines, using standardized questionnaires and case report forms.

Second, Longitudinal studies (LS) will estimate the incidence of persistent HPV infection in sexually active girls and young women in geographically defined communities and special populations. Depending on the country setting, the LS will enroll sexually active girls and women who are aged between 15-35 years and follow them up to 24 months. Participants will be tested every 6 months for 24 months to determine incident persistent HR HPV infection. In selected countries, urine and self-collected vaginal swabs (SCVS) will be collected at the first visit to determine the comparability of HPV genotyping results from both sample types. For all the other visits, only SCVS will be collected. Data on demographics, socioeconomic status, sexual and reproductive history, cervical screening, HPV vaccination, and other potential risk factors will be collected using standardized questionnaires.

Furthermore, the qualitative sub-studies in five selected countries (Bangladesh, Nepal, Pakistan, Sierra Leone, DR Congo) will follow and draw on findings from the CSS, focusing on girls and women of different age strata as well as community members (including boys and men) and key informants in the health care system in each study site. Qualitative study methods will vary depending on the site and CSS findings, but will include both individual in- depth interviews (IDIs) (up to \~ 30 individuals per site), key informant interviews as well as multiple focus group discussions (FGDs) with \~6-8 participants/group. Detailed qualitative study methodology will be developed separately as another study protocol and adapted according to the procedures for each site.

1. Urine Sample When urine is collected as a sample in either CSS or LS, first flow urine samples will be collected.
2. Self-collected Vaginal Swab SCVS will be collected by the participant under the supervision of a trained nurse or other health care worker.
3. Blood Sample If funding permits, a blood sample may be collected from participants in LS once during the follow-up period. If blood sample collection was not feasible during a visit, two additional attempts may be made to collect blood samples from LS participants during the subsequent follow-up visits.

Global Burden Estimation of Human Papillomavirus (GLOBE-HPV)

Along with the protocol, metadata, data dictionary, and participant-level data will be shared. Additionally, statistical analysis plan and analytical codes used for creating the analysis results for each publication will also be shared if applicable. The final participant-level dataset will encompass demographics, primary and secondary outcomes as well as all survey data. The study datasets will initially be stored and organized in a study database using the REDCap, specifically designed for the GLOBE-HPV study. Additionally, all datasets will be stored in an open access repository, ViVli.org.

Data will be deidentified in accordance with the Safe Harbor method. Following the guidelines, the following variables will be replaced or removed from the data sets prior to data sharing.

Study ID will be replaced with Dummy ID

All elements of dates will be removed from data sets

All information about geographic subdivisions smaller than a state/province will be removed from data sets

HPV 16 and 18 are the most common types associated with an increased risk of cervical, anal, and other types of cancer. The incidence of HPV infection rises quickly after sexual debut and HPV infection is most common among young adults up to the age of 30, with incidence generally declining after that. The proposed age range of 9-50 years old for the CSS has been divided into four age-strata, 9-14, 15-20, 21-30, 31-50 years old, in order to understand the HPV prevalence among the age group targeted for primary series of HPV vaccine (9-14 years old), the age group targeted for multi-age cohort catch-up campaign (15-20 years old) and to gather prevalence data on older females.

The age range for the LS will target the age group that is anticipated to have the highest incidence (e.g. newly sexually active girls and women) or to meet the specific research needs. The progression of HPV infection can lead to the development of premalignant lesions in the epithelial lining, ranging from low-grade (CIN 1) to high-grade (CIN 2 and 3). Persistent infection with high-risk HPV genotypes can result in premalignant and malignant lesions which typically take over 10-20 years to develop. An endpoint of 6-month persistent HPV infection has been commonly used in both epidemiological studies of HPV infection and clinical trials of HPV vaccines.

This study aims to provide standard data among girls and women ages 9-50 in 8 countries, 3 in South Asia, and 5 in Sub-Saharan Africa, on the burden of HPV in a representative population sample of lower socio-economic status, as well as in particular vulnerable sub-populations of girls and women depending on the country.

Countries have been selected such that there will be representation from countries with high, medium, or low HIV incidence, high and low cervical cancer incidence, those with or without HPV screening and treatment programs, and countries that are in various stages of prophylactic HPV vaccine rollout.

For each CSS and LS, study data will be summarized using descriptive statistics (mean, standard deviation, median, minimum, and maximum) for continuous variables, and counts and percentages for categorical variables. The denominator for each percentage will be the number of participants who were eligible for each CSS/LS unless otherwise specified.

In LS, participants will be tested every 6 months for 24 months to determine incident persistent HR HPV infection. In selected countries, urine and self-collected vaginal swabs (SCVS) will be collected at the first visit to determine the comparability of HPV genotyping results from both sample types. For all the other visits, only SCVS will be collected.

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization
Analyzing the Urine During BCG Instillation in Bladder Cancer Patients for Disease Followup	NCT06153849	Bladder Cancer	urine sample co...	18 Years - 99 Years	Changhai Hospital
Analyzing the Urine During BCG Instillation in Bladder Cancer Patients for Disease Followup	NCT06153849	Bladder Cancer	urine sample co...	18 Years - 99 Years	Changhai Hospital
Global Burden Estimation of Human Papillomavirus (GLOBE-HPV)	NCT06129253	HPV Infection	Urine Sample Co... Self-collected ... Blood Samples	9 Years - 50 Years	International Vaccine Institute

Spots Global Cancer Trial Database for urine sample collection