Investigator

Elizabeth Y. Chiao

Professor · University of Texas MD Anderson Cancer Center, Epidemiology

EYCElizabeth Y. Chiao
Papers(4)
A Cross-Sectional Stu…Expanding Cervical Ca…A randomized clinical…Demographic and socia…
Collaborators(10)
Mark F. MunsellMila P. SalcedoKathleen M SchmelerDercia ChanguleCarla CarrilhoRicardina RangeiroSamantha BatmanJoseph P. ThomasKeith SigelKristina R. Dahlstrom
Institutions(5)
The University Of Tex…Maputo Central Hospit…The University of Tex…Mount Sinai HospitalBaylor College of Med…

Papers

A Cross-Sectional Study of the Prevalence of Anal Dysplasia among Women with High-Grade Cervical, Vaginal, and Vulvar Dysplasia or Cancer: The PANDA Study

Background: High-risk human papillomavirus (HR-HPV) infection is a risk factor for anal cancer, yet no anal cancer screening guidelines exist for women with lower genital tract HPV-related disease. We sought to describe the prevalence of anal HR-HPV or cytologic abnormalities in such women. Methods: This cross-sectional study was performed between October 2018 and December 2021. Inclusion criteria were ≥21 years of age and a prior diagnosis of high-grade dysplasia/cancer of the cervix, vagina, or vulva. Participants underwent anal cytology and anal/cervicovaginal HR-HPV testing. Women with abnormal anal cytology were referred for high-resolution anoscopy (HRA). Results: 324 evaluable women were enrolled. Primary diagnosis was high-grade dysplasia/cancer of the cervix (77%), vagina (9%), and vulva (14%). Anal HR-HPV was detected in 92 patients (28%) and included HPV-16 in 24 (26%), HPV-18 in 6 (7%), and other HR-HPV types in 72 (78%) patients. Anal cytology was abnormal in 70 patients (23%) and included atypical squamous cells of undetermined significance (80%), low-grade squamous intraepithelial lesion (9%), high-grade intraepithelial lesion (HSIL; 1%), and atypical squamous cells-cannot rule out HSIL (10%). Of these patients, 55 (79%) underwent HRA. Anal biopsies were performed in 14 patients: 2 patients had anal intraepithelial neoplasia (AIN) 2/3, 1 patient had AIN 1, and 11 patients had negative biopsies. Both patients with AIN 2/3 had a history of cervical dysplasia. Conclusions: Our results suggest an elevated risk of anal HR-HPV infection and cytologic abnormalities in women with lower genital tract dysplasia/cancer. Impact: These results add to the growing body of evidence suggesting the need for evaluation of screening methods for anal dysplasia/cancer in this patient population to inform evidence-based screening recommendations.

Expanding Cervical Cancer Screening in Mozambique: Challenges Associated With Diagnosing and Treating Cervical Cancer

PURPOSE Mozambique has one of the highest burdens of cervical cancer globally. Treatment options are few as most women present with advanced disease, and there are limited trained health professionals and health care resources. The objective of this study was to describe the outcomes of women diagnosed with invasive cancer as part of the Mozambican women undergoing cervical cancer screening with human papillomavirus (HPV) testing in conjunction with family planning services (MULHER) study. MATERIALS AND METHODS Women age 30-49 years were prospectively enrolled in the MULHER study and offered screening with primary HPV testing followed by treatment of screen-positive women with thermal ablation or excision as appropriate. Women with cervical examination findings suspicious for cancer were referred to one of the three gynecologic oncologists in the country. RESULTS Between January 2020 and January 2023, 9,014 women underwent cervical cancer screening and 30 women were diagnosed with cervical cancer. In this cohort, four patients (13.3%) had early-stage disease, 18 (60.0%) had locally advanced disease, one (3.3%) had distant metastatic disease, and seven (23.3%) did not have staging information available. Five patients (16.6%) died without receiving oncologic treatment, and seven patients (23.3%) are still awaiting treatment. Of the remaining 18 patients, three (17.6%) underwent surgery and four (23.5%) received radiotherapy. Eleven (36.7%) patients received only chemotherapy. CONCLUSION As cervical screening programs are implemented in low-resource settings, there will likely be an increase in the number of women diagnosed with invasive cervical cancer. Our results in Mozambique demonstrate the need to increase access to advanced surgery, radiation, and palliative care services.

A randomized clinical trial to assess the effectiveness of thermal ablation versus loop electrosurgical excision procedure for cervical cancer risk reduction in women living with HIV in Mozambique.

Cervical cancer remains a leading cause of death in low- and middle-income countries. Women living with human immunodeficiency virus (HIV) carry a 6-fold higher risk of cervical cancer than the general population. The effectiveness of thermal ablation versus loop electrosurgical excision procedure (LEEP) in women living with HIV is uncertain, prompting this study. To compare the effectiveness of thermal ablation versus LEEP for the management of abnormal cervical cancer screening results in women living with HIV. Thermal ablation is non-inferior to LEEP for treatment of cervical intra-epithelial neoplasia (CIN) 2/3 and high-risk human papillomavirus (hrHPV) infection in women living with HIV. This is a prospective randomized clinical trial. Participants undergo screening with primary hrHPV testing. Those with positive hrHPV results undergo visual inspection with acetic acid and a review of genotyping results to determine eligibility for treatment. Those who are hrHPV-positive and positive by visual assessment with acetic acid, or human papillomavirus16/18 positive regardless of visual assessment with acetic acid result, are randomized to thermal ablation or LEEP. Participants undergo follow-up at 4 to 8 weeks, 6 months, and 12 months post-procedure. Participants include 25 to 49-year-old women living with HIV in Mozambique. Exclusion criteria include pregnancy, previous total hysterectomy, history of cervical cancer or prior treatment for CIN, or any condition that would preclude adherence to the study protocol. Persistent or recurrent CIN 2/3 (or worse diagnosis) and hrHPV infection at 12 months after initial treatment. To meet our primary objectives and to achieve a power of 0.8 (α = 0.025), we will need to randomize 126 participants with CIN 2/3, 63 to thermal ablation, and 63 to LEEP. We estimate that this will require screening a total of 4844 women living with HIV. We anticipate that study accrual will be completed in 3 years (2027), with an additional 18 months to complete all follow-up visits and data analysis. We anticipate presenting results in 2029. ClinicalTrials.gov #NCT06326294.

Demographic and social determinants of human immunodeficiency virus status among women with cervical cancer in a low-resource setting.

Zambia faces one of the world's highest cervical cancer and human immunodeficiency virus (HIV) burdens, yet how demographics and social determinants of health relate to HIV status among women with cervical cancer remains unclear. We conducted a prospective, Institutional Review Board-approved cross-sectional study of women aged ≥18 years with newly diagnosed cervical cancer at the Cancer Diseases Hospital in Lusaka, Zambia, from June 2022 to April 2025. Participants completed a culturally adapted Accountable Health Communities Health-Related Social Needs questionnaire. Demographic and social need variables were compared by HIV status, with associated factors evaluated via univariable and multi-variable logistic regression. Among 290 women, 160 (55.2%) were living with HIV. They were younger (median age 48 vs 53 years, p = .002), more often unmarried (49% vs 31%, p = .002), and more likely to live in urban areas (62% vs 43%, p = .003) than women living without HIV. They reported greater prior cervical cancer screening (48% vs 28%, p < .001) and knowledge (40% vs 25%, p = .008). Social needs were high across both groups: food insecurity (77%), transport barriers (82%), financial hardship (88%), loneliness (65%), and perceived stress (75%), with no HIV-related differences. In multi-variable analysis, younger age (adjusted odds ratio [aOR] 0.76 per 5 years, 95% confidence interval [CI] 0.66 to 0.87), unmarried status (aOR 3.06, 95% CI 1.79 to 5.35), urban residence (aOR 2.00, 95% CI 1.21 to 3.32), and prior knowledge of cervical cancer (aOR 1.86, 95% CI 1.08 to 3.23) were associated with HIV. No social need domain showed an independent association. In Zambian women with cervical cancer, HIV status is linked to demographic factors and cancer awareness, but not social needs, which were uniformly high across patients. This highlights the need to expand education and screening, especially for younger and unmarried women, and integrate socioeconomic support to improve outcomes in Zambia and similar high-burden settings.

198Works
4Papers
42Collaborators

Positions

2020–

Professor

University of Texas MD Anderson Cancer Center · Epidemiology

2004–

Professor

Baylor College of Medicine · Infectious Diseases

Links & IDs
0000-0001-5752-2916

Scopus: 6603106269