Publications by authors named "Darcy K"

Human papillomavirus (HPV) is the most common sexually transmitted infection in the United States and is associated with the development of genital warts, precancerous lesions, and cancers of the oropharynx, anus, penis, vulva, vagina, and cervix. HPV-associated diseases are preventable through vaccination. An Australian nationwide vaccination program will effectively eliminate cervical cancer as a public health concern by the year 2035.

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Article Synopsis
  • The study analyzed trends in uterine cancer diagnoses before and during the COVID-19 pandemic using data from 2001 to 2020.
  • In 2020, there were 4,232 fewer cases diagnosed than expected, resulting in a 9.3% decrease compared to projections based on previous trends.
  • The largest decreases in diagnoses were seen in Hispanic (14.6%) and Asian and Pacific Islander (12.0%) populations, emphasizing the need to focus health resources on these vulnerable groups post-pandemic.
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Purpose: To assess the risk for pseudophakic cystoid macular oedema (PCME) and posterior capsular opacification (PCO) associated with combined cataract surgery and trabeculectomy compared to cataract surgery alone.

Methods: Data analysis of subjects who underwent routine cataract surgery without and with concomitant trabeculectomy at the Department of Ophthalmology, Bristol Eye Hospital, the UK, between January 2008 and December 2017. Odds ratios (ORs) for PCME between the types of surgeries were calculated using univariate and multivariate regression analysis.

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Purpose: To assess the risk for uveitis, pseudophakic cystoid macular edema (PCME), and posterior capsular opacification (PCO) associated with the use of pupil expansion devices in cataract surgery.

Design: A retrospective comparative cohort study.

Participants: Patients who underwent routine cataract surgery with and without pupil expansion devices at the Department of Ophthalmology, Bristol Eye Hospital, UK, between January 2008 and December 2017.

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Background: Black women are at an increased risk of developing uterine leiomyomas and experiencing worse disease prognosis than White women. Epidemiologic and molecular factors have been identified as underlying these disparities, but there remains a paucity of deep, multiomic analysis investigating molecular differences in uterine leiomyomas from Black and White patients.

Objective: To identify molecular alterations within uterine leiomyoma tissues correlating with patient race by multiomic analyses of uterine leiomyomas collected from cohorts of Black and White women.

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Objective: Investigate racial disparities in outcomes and molecular features in Black and White patients with endometrioid endometrial carcinoma (EEC).

Methods: Black and White patients diagnosed with EEC who underwent hysterectomy ± adjuvant treatment in SEER, National Cancer Database (NCDB), the Genomics Evidence Neoplasia Information Exchange (GENIE) project (v.13.

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Objective: To assess the effect of diabetes type on Nd:YAG capsulotomy rates following cataract surgery.

Design: A retrospective cohort study.

Methods: All patients who underwent cataract extraction at the Department of Ophthalmology, Bristol Eye Hospital, Bristol, UK, between 2003 and 2017 were included.

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We performed a deep proteogenomic analysis of bulk tumor and laser microdissection enriched tumor cell populations from high-grade serous ovarian cancer (HGSOC) tissue specimens spanning a broad spectrum of purity. We identified patients with longer progression-free survival had increased immune-related signatures and validated proteins correlating with tumor-infiltrating lymphocytes in 65 tumors from an independent cohort of HGSOC patients, as well as with overall survival in an additional 126 HGSOC patient cohort. We identified that homologous recombination deficient (HRD) tumors are enriched in pathways associated with metabolism and oxidative phosphorylation that we validated in independent patient cohorts.

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Purpose: To investigate IMT use and survival in real-world stage IVB cervical cancer patients outside randomized clinical trials.

Methods: Patients diagnosed with stage IVB cervical cancer during 2013-2019 in the National Cancer Database and treated with chemotherapy (CT) ± external beam radiation (EBRT) ± intracavitary brachytherapy (ICBT) ± IMT were studied. The adjusted hazard ratio (AHR) and 95% confidence interval (CI) for risk of death were estimated in patients treated with vs.

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Numerous multi-omic investigations of cancer tissue have documented varying and poor pairwise transcript:protein quantitative correlations, and most deconvolution tools aiming to predict cell type proportions (cell admixture) have been developed and credentialed using transcript-level data alone. To estimate cell admixture using protein abundance data, we analyzed proteome and transcriptome data generated from contrived admixtures of tumor, stroma, and immune cell models or those selectively harvested from the tissue microenvironment by laser microdissection from high grade serous ovarian cancer (HGSOC) tumors. Co-quantified transcripts and proteins performed similarly to estimate stroma and immune cell admixture (r ≥ 0.

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Purpose: We investigated racial disparities in survival by histology in cervical cancer and examined the factors contributing to these disparities.

Methods: Non-Hispanic Black and non-Hispanic White (hereafter known as Black and White) patients with stage I-IV cervical carcinoma diagnosed between 2004 and 2017 in the National Cancer Database were studied. Survival differences were compared using Cox modeling to estimate hazard ratio (HR) or adjusted HR (AHR) and 95% confidence interval (CI).

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Objective: This study investigated the risk of an aggressive endometrial cancer (EC) diagnosis by race, ethnicity, and country of origin to further elucidate histologic disparities in non-Hispanic Black (NHB), Hispanic, Asian/Pacific Islander (API), American Indian/Alaskan Native (AIAN) vs. non-Hispanic White (NHW) patients, particularly in Hispanic or API subgroups.

Methods: Patient diagnosed between 2004 and 2020 with low grade (LG)-endometrioid endometrial cancer (ECC) or an aggressive EC including grade 3 EEC, serous carcinoma, clear cell carcinoma, mixed epithelial carcinoma, or carcinosarcoma in the National Cancer Database were studied.

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Article Synopsis
  • Uterine serous carcinoma (USC) is a rare but aggressive type of uterine cancer that shows high resistance to chemotherapy and recurrence, leading to significant mortality rates.
  • This study aimed to explore the complex tumor microenvironment of USC through advanced techniques like multi-region microsampling and quantitative proteomics from tumor samples of nine patients.
  • Results revealed significant heterogeneity within the tumors, showing that different cell populations vary considerably, highlighting the importance of analyzing specific cellular subgroups instead of just bulk tumor tissue for better understanding of disease mechanics.
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Objective: To evaluate the patterns and trends of uterine cancer among Asian subgroups living in the U.S.

Methods: Data were obtained from United States Cancer Statistics (2001-2017), National Cancer Database (2004-2015), and World Population Review (2023).

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Objective: To evaluate patterns and trends of uterine cancer among Hispanic subgroups.

Methods: The United States Cancer Statistics (USCS), National Cancer Database (NCDB), and World Population Review were used to obtain data on incidence, demographic characteristics, and cancer histology. Joinpoint regression program was used for statistical analysis.

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Objectives: To determine clinical significance of preoperative and pre-chemotherapy CA-125 in high-risk early-stage epithelial ovarian cancer patients.

Methods: All patients with stage IA/IB and grade 3, stage IC, clear cell, or completed resected stage II cancer were enrolled in a phase III trial and treated with chemotherapy. Kaplan-Meier method and Cox proportional hazards model were used for statistical analyses.

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Article Synopsis
  • The study aimed to evaluate the effectiveness of a deep learning model for automatically segmenting pelvic/ovarian and omental lesions in high-grade serous ovarian cancer on CT scans.
  • Using 451 CT scans for training, evaluation, and testing, the model was compared against existing methods and trainee radiologist segmentations.
  • Results indicated that the deep learning model significantly outperformed the standard method for pelvic/ovarian lesions and performed comparably to a trainee radiologist, suggesting that automated segmentation is a viable tool in clinical settings.
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In this study, we investigated the metabolic alterations associated with clinical response to chemotherapy in patients with ovarian cancer. Pre- and post-neoadjuvant chemotherapy (NACT) tissues from patients with high-grade serous ovarian cancer (HGSC) who had poor response (PR) or excellent response (ER) to NACT were examined. Desorption electrospray ionization mass spectrometry (DESI-MS) was performed on sections of HGSC tissues collected according to a rigorous laparoscopic triage algorithm.

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Article Synopsis
  • The study analyzed uterine cancer mortality trends in the U.S. from 1969 to 2018, focusing on age and race/ethnicity factors.
  • Uterine cancer deaths initially decreased until 1997 but saw a rise from 1997 to 2018, impacting all age groups—particularly older individuals and non-Hispanic Black women, who faced significantly higher mortality rates.
  • In recent years, the most alarming increases in mortality rates were among young non-Hispanic Black and Hispanic women, suggesting urgent attention is needed for these demographic groups.
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Objective: ATR kinase inhibitors promote cell killing by inducing replication stress and through potentiation of genotoxic agents in gynecologic cancer cells. To explore mechanisms of acquired resistance to ATRi in ovarian cancer, we characterized ATRi-resistant ovarian cancer cells generated by metronomic dosing with the clinical ATR inhibitor AZD6738.

Methods: ATRi-resistant ovarian cancer cells (OVCAR3 and OV90) were generated by dosing with AZD6738 and assessed for sensitivity to Chk1i (LY2603618), PARPi (Olaparib) and combination with cisplatin or a CDK4/6 inhibitor (Palbociclib).

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Importance: Disparities in survival exist between non-Hispanic Black (hereafter, Black) and non-Hispanic White (hereafter, White) patients with uterine cancer.

Objective: To investigate factors associated with racial disparities in survival between Black and White patients with uterine cancer.

Design, Setting, And Patients: This cohort study used data from the National Cancer Database on 274 838 Black and White patients who received a diagnosis of uterine cancer from January 1, 2004, to December 31, 2017, with follow-up through December 2020.

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Article Synopsis
  • The review investigates the effectiveness of corneal collagen cross-linking beyond its established use in progressive keratoconus.
  • The analysis of 97 studies indicates that collagen cross-linking may help slow the progression of various corneal diseases, potentially minimizing the need for more invasive surgeries like keratoplasty.
  • However, the overall evidence is limited, particularly for specific types of keratitis, making it essential to exercise caution and further study its safety and efficacy.
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Purpose: We describe a modified technique for managing a peripheral, non-infected, corneal perforation using a "Sandwich" technique that combines posterior lamellar keratoplasty, an amniotic membrane patch and a Gundersen conjunctival flap.

Observations: A 75-year-old female patient presented with Sjogren's syndrome-related corneal perforation. A mini-Descemet stripping automated endothelial keratoplasty (DSAEK) graft (5 mm) was introduced into the anterior chamber and was mobilized to plug the perforation.

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Background: Cyclin E1 (CCNE1) is a potential predictive marker and therapeutic target in tubo-ovarian high-grade serous carcinoma (HGSC). Smaller studies have revealed unfavorable associations for CCNE1 amplification and CCNE1 overexpression with survival, but to date no large-scale, histotype-specific validation has been performed. The hypothesis was that high-level amplification of CCNE1 and CCNE1 overexpression, as well as a combination of the two, are linked to shorter overall survival in HGSC.

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