Sex and ethnic disparities in hepatitis B evaluation and treatment across the world.

BACKGROUND & AIMS: Oral antiviral therapy with nucleos(t)ide analogues (NAs) for chronic hepatitis B (CHB) is well-tolerated and lifesaving, but real-world data on utilization are limited. We examined rates of evaluation and treatment in patients from the REAL-B consortium. METHODS: This was a cross-sectional study nested within our retrospective multinational clinical consortium (2000-2021). We determined the proportions of patients receiving adequate evaluation, meeting AASLD treatment criteria, and initiating treatment at any time during the study period. We also identified factors associated with receiving adequate evaluation and treatment using multivariable logistic regression analyses. RESULTS: We analyzed 12,566 adult treatment-naïve patients with CHB from 25 centers in 9 countries (mean age 47.1 years, 41.7% female, 96.1% Asian, 49.6% Western region, 8.7% cirrhosis). Overall, 73.3% (9,206 patients) received adequate evaluation. Among the adequately evaluated, 32.6% (3,001 patients) were treatment eligible by AASLD criteria, 83.3% (2,500 patients) of whom were initiated on NAs, with consistent findings in analyses using EASL criteria. On multivariable logistic regression adjusting for age, sex, cirrhosis, and ethnicity plus region, female sex was associated with adequate evaluation (adjusted odds ratio [aOR] 1.13, p = 0.004), but female treatment-eligible patients were about 50% less likely to initiate NAs (aOR 0.54, p <0.001). Additionally, the lowest evaluation and treatment rates were among Asian patients from the West, but no difference was observed between non-Asian patients and Asian patients from the East. Asian patients from the West (vs. East) were about 40-50% less likely to undergo adequate evaluation (aOR 0.60) and initiate NAs (aOR 0.54) (both p <0.001). CONCLUSIONS: Evaluation and treatment rates were suboptimal for patients with CHB in both the East and West, with significant sex and ethnic disparities. Improved linkage to care with linguistically competent and culturally sensitive approaches is needed. IMPACT AND IMPLICATIONS: Significant sex and ethnic disparities exist in hepatitis B evaluation and treatment, with female treatment-eligible patients about 50% less likely to receive antiviral treatment and Asian patients from Western regions also about 50% less likely to receive adequate evaluation or treatment compared to Asians from the East (there was no significant difference between Asian patients from the East and non-Asian patients). Improved linkage to care with linguistically competent and culturally sensitive approaches is needed.

The Role of Culturally Appropriate Mediated Communication Strategies to Reduce Hepatitis B and Liver Cancer Disparities.

Asian, Pacific Islander, African, and Caribbean communities in the U.S. are heavily impacted by chronic hepatitis B (HBV) and hepatocellular carcinoma (HCC). Educating these groups about the link between the two diseases is imperative to improve screening rates and health outcomes. This study aims to identify and incorporate preferred mediated communication methods into community-specific educational campaigns which emphasize the connection between the conditions, to promote uptake of prevention and management behaviors for HBV and HCC. Fifteen focus groups and two key informant interviews were conducted with Micronesian, Chinese, Hmong, Nigerian, Ghanaian, Vietnamese, Korean, Somali, Ethiopian, Filipino, Haitian, and Francophone West African communities. Data were analyzed using thematic coding and analysis. Findings demonstrate that all communities preferred materials be offered in both English and native languages and requested that materials highlight the connection between HBV and HCC. Delivery channel preferences and messaging themes varied by group. This study provides insight into community-specific preferences for learning about HBV and HCC. The findings can be used to design culturally and linguistically tailored, multi-platform, health education campaigns to facilitate improved HBV screening and vaccination rates and increase knowledge about HCC risk among highly impacted communities in the U.S.

Prevalence and Susceptibility to Hepatitis B virus and the Need for Community Health Education in Milwaukee's Hmong Community.

BACKGROUND: Chronic Hepatitis B virus infection, the leading cause of hepatocellular carcinoma worldwide, disproportionately affects Asian Pacific Islanders (APIs) within the USA. Among APIs, the Hmong have one of the highest rates of chronic HBV infection-up to 18% compared to 0.1% for non-Hispanic Caucasians. This study sought to estimate the prevalence of HBV infection and assess the need for community HBV education within Milwaukee County's Hmong. METHODS: Between 3/2013 and 12/2019, 287 Hmong participants were screened for HBV and 271 were provided targeted HBV education to evaluate its impact on HBV knowledge. RESULTS: Among participants screened, 178 (62%) were immune; 77 (27%) susceptible; 27 (9%) positive; and 5 (2%) in a "gray zone." Targeted health education showed statistically significant improvement in HBV knowledge. DISCUSSION: With 38% lacking immunity to HBV and 9% with active infection, there remains a significant need for HBV screening, vaccination, and education in Milwaukee's Hmong community.

Optimizing hepatitis B virus screening in the United States using a simple demographics-based model.

BACKGROUND AND AIMS: Chronic hepatitis B (CHB) affects >290 million persons globally, and only 10% have been diagnosed, presenting a severe gap that must be addressed. We developed logistic regression (LR) and machine learning (ML; random forest) models to accurately identify patients with HBV, using only easily obtained demographic data from a population-based data set. APPROACH AND RESULTS: We identified participants with data on HBsAg, birth year, sex, race/ethnicity, and birthplace from 10 cycles of the National Health and Nutrition Examination Survey (1999-2018) and divided them into two cohorts: training (cycles 2, 3, 5, 6, 8, and 10; n = 39,119) and validation (cycles 1, 4, 7, and 9; n = 21,569). We then developed and tested our two models. The overall cohort was 49.2% male, 39.7% White, 23.2% Black, 29.6% Hispanic, and 7.5% Asian/other, with a median birth year of 1973. In multivariable logistic regression, the following factors were associated with HBV infection: birth year 1991 or after (adjusted OR [aOR], 0.28; p < 0.001); male sex (aOR, 1.49; p = 0.0080); Black and Asian/other versus White (aOR, 5.23 and 9.13; p < 0.001 for both); and being USA-born (vs. foreign-born; aOR, 0.14; p < 0.001). We found that the ML model consistently outperformed the LR model, with higher area under the receiver operating characteristic values (0.83 vs. 0.75 in validation cohort; p < 0.001) and better differentiation of high- and low-risk persons. CONCLUSIONS: Our ML model provides a simple, targeted approach to HBV screening, using only easily obtained demographic data.

Distribution and factors associated with serum HBV pregenomic RNA levels in Chinese chronic hepatitis B patients.

Correlations between serum hepatitus B virus (HBV) pregenomic RNA (pgRNA), hepatitus B surface antigen (HBsAg), and hepatitus B core-related antigen (HBcrAg) levels, and influencing factors of serum HBV pgRNA levels in Chinese chronic hepatitis B (CHB) patients are rarely reported. This was a retrospective cohort study consisting of 204 outpatients with CHB. Serum levels of HBV pgRNA, HBsAg, and HBcrAg were quantitative measured in frozen blood samples. The linear regression and multivariate logistic regression analysis were performed to determine associated factors of serum HBV pgRNA levels. In this cohort, the median serum HBV pgRNA level was 4.12 log10 copies/ml and 33.33% (68/204) of them had serum HBV pgRNA under low limit of detection (LLD) (<500 copies/ml); and the percentage of patients with serum HBV pgRNA under LLD in hepatitis B e antigen (HBeAg)-positive patients was significantly lower than that in HBeAg-negative patients (15.75% [23/46] vs. 77.59% [45/58], p < .001). Overall, serum HBV pgRNA strongly correlated with HBcrAg (r = 0.760, p < .001), and moderately correlated with HBV DNA (r = 0.663, p < .001) and HBsAg (r = 0.670, p < .001). As compared with HBsAg and HBV DNA, only HBcrAg showed stable correlation with serum HBV pgRNA both in HBeAg-positive and HBeAg-negative patients. Serum HBV pgRNA level differed between HBeAg-positive and HBeAg-negative patients; and it had better and more stable correlation with serum HBcrAg than serum HBV DNA and HBsAg, irrespective of HBeAg status.

Patient Knowledge, Beliefs and Barriers to Hepatitis B Care: Results of a Multicenter, Multiethnic Patient Survey.

BACKGROUND: A greater understanding of the determinants of health behavior among those with and at-risk of chronic hepatitis B virus (HBV) infection is needed for effective design and implementation of public health initiatives. AIMS: To determine factors associated with (1) willingness to accept HBV antiviral treatment and (2) satisfaction with provider communication regarding HBV care in a diverse cohort of HBV-infected patients. METHODS: Using a multifaceted model of health behavior, the Health Behavior Framework, we conducted a comprehensive assessment of knowledge, attitudes, beliefs, and barriers to HBV care. RESULTS: We enrolled 510 patients, with mean age 46 years; 53.1% men; and 71.6% Asian or Hawaiian/Pacific Islander. Patients were knowledgeable about HBV infection, but one-fifth did not think that HBV was a treatable disease; over a quarter felt it was so common among family and friends that it did not concern them, and less than half of patients believed they were likely to have liver problems or transmit HBV to others during their lifetime. Perceived susceptibility to disease risk was the only independent predictor of willingness to accept HBV treatment (ß = 0.23, p = 0.0005), and contrary to expectations, having a doctor that speaks the same language was predictive of lower patient satisfaction with provider communication about their HBV care (ß = - 0.65, p < 0.0001). CONCLUSIONS: Patients with greater perceived susceptibility to the health consequences of HBV infection are more likely to accept treatment, and patient-provider language concordance impacts patient satisfaction with communication regarding HBV care in an unexpected direction.

Validation of the Expanded Baveno-VI Criteria for Screening Gastroscopy in Asian Patients with Compensated Advanced Chronic Liver Disease.

BACKGROUND: The expanded Baveno-VI criteria may further reduce the need for screening gastroscopy compared to Baveno-VI criteria. AIM: We sought to validate the performance of these criteria in a cohort of compensated advanced chronic liver disease (cACLD) patients with predominantly hepatitis B infection. METHODS: Consecutive cACLD patients from 2006 to 2012 with paired liver stiffness measurements and screening gastroscopy within 1 year were included. The expanded Baveno-VI criteria were applied to evaluate the sensitivity (SS), specificity (SP), positive predictive value (PPV) and negative predictive value (NPV) for the presence of high-risk varices (HRV). RESULTS: Among 165 cACLD patients included, 17 (10.3%) had HRV. The commonest etiology of cACLD was chronic hepatitis B (36.4%) followed by NAFLD (20.0%). Application of expanded Baveno-VI criteria avoided more screening gastroscopy (43.6%) as compared to the original Baveno-VI criteria (18.8%) without missing more HRV (1 with both criteria). The overall SS, SP, PPV and NPV of the expanded Baveno-VI criteria in predicting HRV were 94.1%, 48.0%, 17.2% and 98.6%, respectively. CONCLUSION: Application of the expanded Baveno-VI criteria can safely avoid screening gastroscopy in 43.6% of cACLD patients with an excellent ability to exclude HRV.

The N-Terminus Makes the Difference: Impact of Genotype-Specific Disparities in the N-Terminal Part of The Hepatitis B Virus Large Surface Protein on Morphogenesis of Viral and Subviral Particles.

The N-terminus of the hepatitis B virus (HBV) large surface protein (LHB) differs with respect to genotypes. Compared to the amino terminus of genotype (Gt)D, in GtA, GtB and GtC, an additional identical 11 amino acids (aa) are found, while GtE and GtG share another similar 10 aa. Variants of GtB and GtC affecting this N-terminal part are associated with hepatoma formation. Deletion of these amino-terminal 11 aa in GtA reduces the amount of LHBs and changes subcellular accumulation (GtA-like pattern) to a dispersed distribution (GtD-like pattern). Vice versa, the fusion of the GtA-derived N-terminal 11 aa to GtD causes a GtA-like phenotype. However, insertion of the corresponding GtE-derived 10 aa to GtD has no effect. Deletion of these 11aa decreases filament size while neither the number of released viral genomes nor virion size and infectivity are affected. A negative regulatory element (aa 2-8) and a dominant positive regulatory element (aa 9-11) affecting the amount of LHBs were identified. The fusion of this motif to eGFP revealed that the effect on protein amount and subcellular distribution is not restricted to LHBs. These data identify a novel region in the N-terminus of LHBs affecting the amount and subcellular distribution of LHBs and identify release-promoting and -inhibiting aa residues within this motive.

Proportion and Characterization of Co-infections of HIV and Hepatitis C or Hepatitis B among People with HIV in Alabama, 2007-2016.

OBJECTIVES: People living with human immunodeficiency virus (HIV) have an increased risk of other infections, including viral hepatitis, which can complicate the treatment and progression of the disease. We sought to characterize Alabama cases of HIV co-infected with hepatitis C virus or hepatitis B virus. METHODS: Using surveillance data, we defined co-infection as a person identified as having hepatitis C or hepatitis B and HIV during 2007-2016. We compared demographics, outcomes, and risk factors for co-infected versus monoinfected individuals with HIV. We mapped co-infected individuals' distribution. RESULTS: Of 5824 people with HIV, 259 (4.4%) were co-infected with hepatitis C (antibody or RNA positive) and 145 (2.5%) with hepatitis B (surface antigen, e antigen, or DNA positive) during 2007-2016. Individuals with HIV and hepatitis C had a greater odds of injection drug use (adjusted odds ratio 9.7; 95% confidence interval 6.0-15.5). Individuals with HIV and hepatitis B had a greater odds of male-to-male sexual contact (adjusted odds ratio 1.7; 95% confidence interval 1.1-2.6). Co-infection was greater in urban public health districts. CONCLUSIONS: We identified risk behaviors among Alabama populations associated with increased odds for HIV and viral hepatitis co-infection. Outreach, prevention, testing, and treatment resources can be targeted to these populations.

Similar risk of hepatocellular carcinoma during long-term entecavir or tenofovir therapy in Caucasian patients with chronic hepatitis B.

BACKGROUND & AIMS: A recent study in Asian patients with chronic hepatitis B (CHB) reported that the incidence of hepatocellular carcinoma (HCC) was lower in patients treated with tenofovir disoproxil fumarate (TDF) than entecavir (ETV), but this finding remains controversial. We aimed to identify any differences in HCC incidence, or other patient outcomes, between patients receiving TDF or ETV in the well monitored, multicenter European PAGE-B cohort. METHODS: We included 1,935 Caucasians with CHB, with or without compensated cirrhosis, treated with ETV (n = 772) or TDF (n = 1,163) monotherapy. Mean follow-up was 7.1 ± 3.0 years from ETV/TDF onset. RESULTS: The 5-year cumulative HCC incidence was 5.4% in ETV- and 6.0% in TDF-treated patients (log-rank, p = 0.321), with no significant difference in any patient subgroup (with or without cirrhosis, naïve or experienced to oral antiviral(s) [total, with or without cirrhosis]). In multivariable Cox regression analyses, the hazard of HCC was similar between ETV- and TDF-treated patients after adjustment for several HCC risk factors. ETV- and TDF-treated patients had similar rates of on-therapy biochemical and virological remission, HBsAg loss, liver transplantation and/or death. Elastographic reversion of cirrhosis at year 5 (liver stiffness <12 kPa) was observed in 245/347 (70.6%) patients with pretreatment cirrhosis, being more frequent in TDF- than ETV- treated patients (73.8% vs. 61.5%, p = 0.038). CONCLUSION: In Caucasian patients with CHB, with or without cirrhosis, long-term ETV or TDF monotherapy is associated with similar HCC risk, rates of biochemical/virological remission, HBsAg loss and liver transplantation or death, but elastographic reversion of cirrhosis at year 5 was more frequent with TDF. LAY SUMMARY: In a large cohort of Caucasians with chronic hepatitis B treated with entecavir (ETV) or tenofovir disoproxil fumarate (TDF) monotherapy, cumulative rates of hepatocellular carcinoma did not differ (up to 12 years). Nor did rates of biochemical/virological remission, HBsAg loss and liver transplantation or death. However, elastographic reversion of cirrhosis at year 5 was more frequent in TDF- than ETV-treated patients with pretreatment cirrhosis.

Clustering of chronic hepatitis B screening intentions in social networks of Moroccan immigrants in the Netherlands.

BACKGROUND: Early detection, identification, and treatment of chronic hepatitis B through screening is vital for those at increased risk, e.g. born in hepatitis B endemic countries. In the Netherlands, Moroccan immigrants show low participation rates in health-related screening programmes. Since social networks influence health behaviour, we investigated whether similar screening intentions for chronic hepatitis B cluster within social networks of Moroccan immigrants. METHODS: We used respondent-driven sampling (RDS) where each participant ("recruiter") was asked to complete a questionnaire and to recruit three Moroccans ("recruitees") from their social network. Logistic regression analyses were used to analyse whether the recruiters' intention to request a screening test was similar to the intention of their recruitees. RESULTS: We sampled 354 recruiter-recruitee pairs: for 154 pairs both participants had a positive screening intention, for 68 pairs both had a negative screening intention, and the remaining 132 pairs had a discordant intention to request a screening test. A tie between a recruiter and recruitee was associated with having the same screening intention, after correction for sociodemographic variables (OR 1.70 [1.15-2.51]). CONCLUSIONS: The findings of our pilot study show clustering of screening intention among individuals in the same network. This provides opportunities for social network interventions to encourage participation in hepatitis B screening initiatives.

Hepatocellular carcinoma prediction beyond year 5 of oral therapy in a large cohort of Caucasian patients with chronic hepatitis B.

BACKGROUND & AIMS: Hepatocellular carcinoma (HCC) may develop in patients with chronic hepatitis (CHB) even after 5 years of oral therapy and cannot be easily predicted. We assessed predictors of HCC development and the need for HCC surveillance in this setting. METHODS: Of 1,951 adult Caucasians with CHB included in the PAGE-B cohort, 1,427 (73%) had completed >5 years of follow-up under therapy without developing HCC by year 5. Median follow-up was 8.4 years from treatment onset. Points-based risk scores were developed to predict HCC risk after year 5. RESULTS: In years 5-12, HCC was diagnosed in 33/1,427 (2.3%) patients with cumulative incidences of 2.4%, 3.2% and 3.8% at 8, 10 and 12 years, respectively. Older age or age >50 years, baseline cirrhosis and liver stiffness (LSM) ≥12 kPa at year 5 were independently associated with increased HCC risk. The HCC incidence was lower in non-cirrhotics than cirrhotics at baseline with year-5 LSM <12; among cirrhotics at baseline, it was lower in those with year-5 LSM <12 than ≥12 kPa. CAGE-B score was based on age at year 5 and baseline cirrhosis in relation to LSM at year 5 and SAGE-B score was based only on age and LSM at year 5 (c-index = 0.809-0.814, 0.805-0.806 after bootstrap validation). Both scores offered 100% negative predictive values for HCC development in their low risk groups. CONCLUSIONS: In Caucasians with CHB, the HCC risk after the first 5 years of antiviral therapy depends on age, baseline cirrhosis status and LSM at year 5. CAGE-B and particularly SAGE-B represent simple and reliable risk scores for HCC prediction and surveillance beyond year 5 of therapy. LAY SUMMARY: In Caucasians with chronic hepatitis B, the risk of hepatocellular carcinoma after the first 5 years of entecavir or tenofovir therapy depends on age, baseline cirrhosis status and liver stiffness at year 5, which can provide simple and reliable risk scores for hepatocellular carcinoma prediction and surveillance beyond year 5. In patients with cirrhosis at baseline, liver stiffness <12 kPa at year 5 is associated with lower HCC risk, but surveillance may be still required.

Knowledge and Perceptions of Hepatitis B and Hepatocellular Carcinoma Screening Guidelines Among Trainees: A Tale of Three Centers.

BACKGROUND: Hepatitis B (HBV), the leading cause of hepatocellular carcinoma (HCC) worldwide, disproportionately affects minorities in the USA. Undiagnosed HBV precludes HCC screening and contributes to late-stage cancer presentation and decreased survival. Barriers to HBV and HCC screening include lack of insurance and limited diffusion of guidelines. We aimed to assess knowledge about HBV and HCC screening indications and explore barriers to screening. METHODS: We surveyed trainees from the University of Miami/Jackson Memorial Hospitals, Palmetto General Hospital, and Mount Sinai Medical Center. We assessed knowledge using clinical vignettes. We performed bivariate and Chi-squared analyses. RESULTS: There were 183 respondents; median age was 31 and 52% were male. The sample was 35% Hispanic, 29% White, 18% Asian, and 9% Black. Training department was Internal Medicine, 71%; Family Medicine, 11%; Infectious Diseases, 6%; or Gastroenterology, 7%. Only 59% correctly estimated national HBV prevalence; 25% correctly estimated global prevalence. In vignettes with behavioral risk factors, trainees correctly advised screening, 63-96%. However, when the risk factor was the birthplace, correct responses ranged from 33 to 53%. Overall, 45% chose an incorrect combination of HBV screening tests. Perceived barriers to screening included limited expertise in screening of immigrants and limited patient education. Respondents were more likely to recommend HCC screening in cirrhotic patients versus non-cirrhotic HBV patients. Key barriers to HCC screening included uncertainty about HCC guidelines and patient financial barriers. CONCLUSIONS: Knowledge of HBV and HCC screening recommendations is suboptimal among trainees. Efforts to broadly disseminate HBV and HCC guidelines through targeted educational interventions are needed.

Healthcare Disparities Identified Between Hmong and Other Asian Origin Groups Living with Chronic Hepatitis B Infection in Sacramento County 2014-2017.

Chronic hepatitis B (CHB) disproportionately affects non-US born Asians. The Hmong have been shown to have the highest rates of CHB and mortality from liver cancer compared to other Asian groups. From September 2014 to September 2017, testing for CHB within Sacramento County was conducted through community-based testing events and an electronic health record alert that identified Asian patients by surname. Demographic and laboratory data were collected for analysis and patients were followed through the study period to assess linkage to care and treatment to compare differences between Asian origin groups. Of 4350 patients tested for CHB, 318 (7.3%) were HBsAg positive, including 90 Chinese, 47 Hmong, and 101 Vietnamese. Hmong were more likely to have Medicaid insurance compared to other Asian origin groups (15%, p < 0.001). Hmong had significantly lower rates of hepatitis B DNA testing (p < 0.001), referral to hepatology (p < 0.001), attendance of first (p < 0.001) and second medical visit (p = 0.0003), and lower rates of antiviral treatment compared to other Asian origin groups. Hmong also had the highest proportion of non-English speakers (p < 0.001). Hmong patients in the Sacramento CHB testing and linkage to care program experience socioeconomic disadvantages compared to Vietnamese and Chinese patients. These factors may contribute to decreased linkage of care and decreased anti-viral treatment rates for CHB.

Real-World Effectiveness From the Asia Pacific Rim Liver Consortium for HBV Risk Score for the Prediction of Hepatocellular Carcinoma in Chronic Hepatitis B Patients Treated With Oral Antiviral Therapy.

BACKGROUND: Patients on oral antiviral (OAV) therapy remain at hepatocellular carcinoma (HCC) risk. Risk prediction tools distinguishing treated patients with residual HCC risk are limited. The aim of this study was to develop an accurate, precise, simple-to-use HCC risk score using routine clinical variables among a treated Asian cohort. METHODS: Adult Asian chronic hepatitis B (CHB) patients on OAV were recruited from 25 centers in the United States and the Asia-Pacific region. Excluded persons were coinfected with hepatitis C, D, or human immunodeficiency virus, had HCC before or within 1 year of study entry, or their follow-up was <1 year. Patients were randomized to derivation and validation cohorts on a 2:1 ratio. Statistically significant predictors from multivariate modeling formed the Real-world Effectiveness from the Asia Pacific Rim Liver Consortium for HBV (REAL-B) score. RESULTS: A total of 8048 patients were randomized to the derivation (n = 5365) or validation group (n = 2683). The REAL-B model included 7 variables (male gender, age, alcohol use, diabetes, baseline cirrhosis, platelet count, and alpha fetoprotein), and scores were categorized as follows: 0-3 low risk, 4-7 moderate risk, and 8-13 high risk. Area under receiver operating characteristics were >0.80 for HCC risk at 3, 5, and 10 years, and these were significantly higher than other risk models (p < .001). CONCLUSIONS: The REAL-B score provides 3 distinct risk categories for HCC development in Asian CHB patients on OAV guiding HCC surveillance strategy.

Trends in chronic hepatitis B prevalence in Australian women by country of birth, 2000 to 2016.

Routine antenatal screening for chronic hepatitis B (HBV) in countries with high migrant populations provides an opportunity to monitor trends in HBV prevalence and can inform estimates locally and in countries with limited seroprevalence data. We linked perinatal birth register records with HBV notifications in the largest Australian state, over the period 2000-2016. Among women aged 15-44 years, we estimated age-standardized chronic HBV prevalence overall and by country of birth and also estimated trends in age-standardized HBV prevalence over time using regression modelling. Among 903 831 women, 8001 linked to a chronic HBV infection record (overall age-standardized prevalence 0.76%, 95% CI: 0.74-0.78). Prevalence varied by country of birth with the highest estimates among women born in Sierra Leone (11.13%, 95% CI: 8.29-13.96), Taiwan (8.08%, 95% CI: 6.74%-9.43%), Cambodia (7.47%, 95% CI: 6.50%-8.45%) and Vietnam (7.36%, 95% CI: 6.97%-7.75%); more moderate estimates among women from North Korea (2.76%, 95% CI: 1.99-3.53) and Samoa (2.64%, 95% CI: 1.99%-3.29%); prevalence was 0.18% (95% CI: 0.17-0.19) in Australian-born women. Over 17 years, there were significant reductions in HBV prevalence among all women (from 0.88% in 2000 to 0.57% in 2016; P < .0001). Among women from high prevalence countries, the greatest absolute reductions were observed among those from Taiwan (10.1%, P < .001) followed by Tonga (5.4%, P < .001), whereas no reductions were observed for women born in Vietnam (P = .08), South Korea (P = .41) and Sudan (P = .06). In conclusion, routine antenatal HBV testing can be used to inform HBV prevalence estimates and vaccine programme impact in countries with limited surveillance and high migration to Australia.

Hep B Moms: A cross-sectional study of mother-to-child transmission risk among pregnant Asian American women with chronic hepatitis B in New York City, 2007-2017.

Mother-to-child transmission (MTCT) is responsible for the majority of chronic hepatitis B virus (HBV) infections worldwide. Despite timely HBV immunoprophylaxis of neonates, MTCT can occur in infants born to mothers with high levels of HBV viremia. We performed a retrospective cross-sectional analysis of Asian American women with chronic HBV evaluated with HBV DNA during prenatal care at two community health sites in New York City from 2007 to 2017. We described patient's demographic and clinical characteristics, categorized their HBV disease phase and analysed for variables associated with high MTCT risk (defined by HBV DNA level >200 000 IU/mL) using multivariable logistic regression. A total of 1298 pregnancies among 1012 mostly China-born (97.6%) women with chronic HBV were included in the study. Of the 1241 pregnancies among women not on antiviral treatment, 22.4% were considered high risk for MTCT and, of these, 255 (91.7%) were HBV e antigen (HBeAg)-positive and 19 (6.8%) were HBeAg-negative. HBeAg-positive status and ALT levels between 26 and 50 U/L were associated with higher likelihood for being high risk for MTCT. Only 0.8% of pregnancies low risk for MTCT were in the immune active phase while the majority (58.4%) were in the inactive chronic HBV phase of infection. Approximately one in five (22.4%) pregnancies among Asian American women with chronic HBV was considered high risk for MTCT and met criteria for antiviral therapy. Full assessment of HBV pregnant women and early coordinated care is needed to deliver interventions to prevent MTCT during critical windows of time.

Genetic association of polymorphisms at the intergenic region between PRDM1 and ATG5 with hepatitis B virus infection in Han Chinese patients.

Chronic hepatitis B virus (HBV) infection is related to chronic hepatitis, cirrhosis, and hepatocellular carcinoma (HCC), and the interplay between the virus and host immune response leads to different outcomes of the infection. PR domain zinc finger protein 1 (PRDM1) and autophagy-related protein 5 (ATG5) are involved in immune response and HBV infection. An intergenic region between PRDM1 and ATG5 (PRDM1-ATG5 region) has been identified, and single-nucleotide polymorphisms (SNPs) in this region were shown to be involved in immune regulation. This study investigated the functionally relevant rs548234, rs6937876, and rs6568431 polymorphisms at the PRDM1-ATG5 region in a Han Chinese population (403 patients with chronic HBV infection [171 chronic hepatitis, 119 cirrhosis, and 113 HCC], 70 infection resolvers, and 196 healthy controls). The frequencies of the rs6568431 allele A in HBV patients (P = .005) and genotype CA in infection resolvers (P = .005) were significantly higher than in healthy controls. In the dominant model, HCC patients had significantly higher frequencies of rs548234 genotypes CC + TC than cirrhosis patients (P = .009). Rs548234 was an independent factor for HCC in comparison with either cirrhosis (P = .005) or all chronic HBV infection without HCC (P = .018). Functional annotation showed evidence of the role of the SNPs in gene regulation. In conclusion, through this study it is revealed for the first time that rs6568431 may be associated with susceptibility to HBV infection and that rs548234 may be associated with HCC risk in chronic HBV infection, supporting the presence of HBV-related disease-causing regulatory polymorphisms in the PRDM1-ATG5 intergenic region.