Publications by authors named "Chih Long Chang"

Article Synopsis
  • - The phase 3 study ENGOT-cx11/GOG-3047/KEYNOTE-A18 found that adding pembrolizumab to standard chemoradiotherapy significantly improved progression-free survival in patients with advanced cervical cancer during the first interim analysis.
  • - In this study, 1060 patients with high-risk cervical cancer were randomly assigned to receive either pembrolizumab or a placebo alongside chemoradiotherapy, with treatment outcomes evaluated at the second interim analysis.
  • - The primary outcomes measured were progression-free survival and overall survival, focusing on patient mortality, with safety being a secondary consideration.
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Human papillomavirus (HPV) remains a global health concern because it contributes to the initiation of various HPV-associated cancers such as anal, cervical, oropharyngeal, penile, vaginal, and vulvar cancer. In HPV-associated cancers, oncogenesis begins with an HPV infection, which is linked to the activation of the Janus protein tyrosine kinase (JAK)/STAT signaling pathway. Various STAT signaling pathways, such as STAT3 activation, have been well documented for their tumorigenic role, yet the role of STAT1 in tumor formation remains unclear.

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Article Synopsis
  • Pembrolizumab, an immunotherapy drug, is being tested to see if it improves the effectiveness of chemoradiotherapy in patients with locally advanced cervical cancer, based on prior success in similar cases.
  • This phase 3 trial involved multiple international centers and used a double-blind, placebo-controlled design to randomly assign participants to receive either pembrolizumab or a placebo alongside their treatment.
  • The primary goals of the study were to measure progression-free survival and overall survival, assessing treatment safety in those who received at least one dose of the study medication.
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Background: This study was designed to investigate the demographics, treatment patterns, and clinical outcomes of patients newly diagnosed with high-grade serous ovarian cancer (HGSOC) in 3 medical centers in Taiwan before the integration of poly (ADP-ribose) polymerase inhibitors in clinical practice.

Methods: A retrospective analysis was conducted on data from patients diagnosed with HGSOC between January 2014 and December 2018 and followed-up for a minimum of 12 months after diagnosis. Descriptive statistics were used to analyze the data, while survival rates were evaluated using the Kaplan‒Meier method.

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Objective: Metastatic squamous cell carcinoma (SCC) of inguinal lymph node region with unknown origin is a rare condition. A patient was diagnosed to have vulvar SCC 7 years after the initial diagnosis of inguinal nodal metastatic SCC of unknown primary.

Case Report: A 59-year-old woman with metastatic SCC of unknown origin in the right inguinal lymph node underwent tumor resection and no evidence of residual disease or possible tumor origin was detected after the surgery and a comprehensive work-up.

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Objective: Post-menopausal bleeding is one of the most common reasons for attending the gynecology outpatient clinic. The major proportion of the symptoms is endometrial atrophy (about 60%) despite of the endometrial thickness is over 4 mm. Therefore, the aim of this study is to evaluate the endometrial thickness under sonogram in the women with atrophic endometrium, with or without post-menopausal vaginal bleeding.

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Background: Malignant ascites is prevalent in advanced-stage ovarian cancer and may facilitate identification of the drivers of muscle loss. This study aimed to evaluate the association of ascites with changes in systemic inflammation and muscle after treatment of advanced-stage ovarian cancer.

Methods: We evaluated 307 patients with advanced-stage (III/IVA) ovarian cancer who underwent primary debulking surgery and adjuvant platinum-based chemotherapy between 2010 and 2019.

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Article Synopsis
  • Since 1995, Taiwan's annual cervical cytology testing for women aged 30 and older has led to a significant decline in cervical cancer cases and deaths.
  • The introduction of an HPV vaccination program for girls aged 13-15 in 2018 is expected to lower the effectiveness of current cytology tests, prompting a need for a shift to more sensitive HPV-based testing methods.
  • A panel of experts has provided policy recommendations for managing this transition, covering aspects like testing procedures, standards, and implementation, to sustain Taiwan's success in cervical cancer prevention.
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Background: Skeletal muscle loss during treatment is associated with poor survival outcomes in patients with ovarian cancer. Although changes in muscle mass can be assessed on computed tomography (CT) scans, this labour-intensive process can impair its utility in clinical practice. This study aimed to develop a machine learning (ML) model to predict muscle loss based on clinical data and to interpret the ML model by applying SHapley Additive exPlanations (SHAP) method.

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Purpose: Sarcopenia is prevalent in ovarian cancer and contributes to poor survival. This study is aimed at investigating the association of prognostic nutritional index (PNI) with muscle loss and survival outcomes in patients with ovarian cancer.

Methods: This retrospective study analyzed 650 patients with ovarian cancer treated with primary debulking surgery and adjuvant platinum-based chemotherapy at a tertiary center from 2010 to 2019.

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Background: Despite the introduction of cervical cancer screening and human papillomavirus (HPV) vaccines, the utilization pattern was not standardized. The aim of this study was to elicit the current prevention care in Asia-Oceania.

Methods: An online questionnaire was circulated to different countries/cities in Asia-Oceania.

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Article Synopsis
  • The INFORM study examined patients with newly diagnosed advanced epithelial ovarian cancer (EOC) in Australia, South Korea, and Taiwan to understand sociodemographics, treatments, and clinical outcomes before the use of certain new therapies.
  • Around 987 patients were analyzed, with the majority receiving platinum-based chemotherapy and various rates of surgical interventions; patients in S.Korea and Taiwan had higher rates of primary surgeries compared to those in Australia.
  • Despite differences in treatment approaches, the study found similar progression-free survival rates among patients across the three countries, indicating a need for new therapies to improve patient outcomes.
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Background: In a phase III, randomised, active-controlled study (EMPOWER-Cervical 1/GOG-3016/ENGOT-cx9; R2810-ONC-1676; NCT03257267) and cemiplimab significantly improved survival versus investigator's choice of chemotherapy among patients with recurrent cervical cancer who had progressed on platinum-based therapy. Here we report patient-reported outcomes in this pivotal study.

Methods: Patients were randomised 1:1 to open-label cemiplimab (350 mg intravenously every 3 weeks) or investigator's choice of chemotherapy in 6-week cycles.

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Objective: Precise delineation of the para-aortic nodal region is critical for the optimal therapeutic ratio of prophylactic para-aortic radiotherapy. We aimed to evaluate the para-aortic control and patient-reported gastrointestinal toxicity in patients with locally advanced cervical cancer who received anatomy-based or margin-based prophylactic para-aortic radiotherapy.

Methods: We analyzed 160 patients with locally advanced cervical cancer who received prophylactic extended-field radiotherapy between January 2014 and November 2019 at two tertiary centers.

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Background: Patients with recurrent cervical cancer have a poor prognosis. Cemiplimab, the fully human programmed cell death 1 (PD-1)-blocking antibody approved to treat lung and skin cancers, has been shown to have preliminary clinical activity in this population.

Methods: In this phase 3 trial, we enrolled patients who had disease progression after first-line platinum-containing chemotherapy, regardless of their programmed cell death ligand 1 (PD-L1) status.

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Purpose: We aimed to determine the effects and possible mechanisms of hyperthermic intraperitoneal chemotherapy (HIPEC) in targeting ovarian cancer stem-like cells (CSCs).

Methods: Murine ovarian cancer cell lines presenting CSC surface markers were grown intraperitoneally in both immunocompetent and immunodeficient mice, which were then treated by intraperitoneal hyperthermia with the chemotherapeutic agents: paclitaxel and cisplatin. Tumor growth was measured by non-invasive luminescent imaging.

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Objective: Breast cancer metastasis to the female genital tract is rare, and the ovaries are the most frequent site of extragenital cancer metastasis. The uterus and cervix have been rarely reported as the site of metastasis.

Case Report: A 57-year-old woman diagnosed with invasive lobular carcinoma of the left breast 2 years prior was undergoing tamoxifen treatment.

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Objective: Human papillomavirus (HPV) testing as the primary cervical cancer screening followed by reflex cytology if high-risk HPV is present (hrHPV+) is recently adopted in some countries. However, reflex cytology's sensitivity is variable, and a suitable triage approach for hrHPV+ remains controversial. Here, we compared the performance of three triage tools in hrHPV+ women.

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Background: Radiation-induced bowel damage may compromise nutrient absorption and digestion and affect body composition during pelvic radiotherapy in patients with locally advanced cervical cancer (LACC). This study aimed to evaluate the relationship between bowel radiation dose-volume and body composition changes during pelvic radiotherapy.

Methods: Data of 301 LACC patients treated with chemoradiotherapy were analyzed.

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Recurrence of advanced epithelial ovarian cancer is common despite optimal surgical debulking and initial favorable responses to chemotherapy. Evidences suggest that cancer stem cells (CSCs) have inherent resistance to conventional therapies such as chemotherapy and play a decisive role in cancer recurrence. Cancer stem cells are also believed to be able to evade immunological attack.

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Debulking surgery followed by systemic chemotherapy-including three-weekly intravenous paclitaxel and carboplatin (GOG-158)-is the cornerstone for advanced epithelial ovarian, fallopian tubal, and peritoneal cancer (EOC) treatment. In this scenario, Federation of Gynecology and Obstetrics (FIGO) stage, cell types, completeness of surgery, lymph nodes (LN) status, adjuvant chemotherapy regimens, survival status, progression-free survival (PFS), and overall survival (OS) of 192 patients diagnosed as having stage IIIA1-IVB EOC over January 2008-December 2017 were analyzed retrospectively. Of them, 100 (52.

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This study aimed to evaluate whether computed tomography (CT)-based muscle measurement predicts distant failure in patients with locally advanced cervical cancer (LACC). Data from 278 patients with LACC who underwent chemoradiation therapy (CCRT) between 2004 and 2017 were analysed. Changes in the skeletal muscle index (SMI), skeletal muscle density, and total adipose tissue index during CCRT were calculated from CT images taken at the baseline and after CCRT.

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Background: Sarcopenia is commonly observed in patients with advanced-stage epithelial ovarian cancer (EOC). However, the effect of body composition changes-during primary debulking surgery (PDS) and adjuvant platinum-based chemotherapy-on outcomes of patients with advanced-stage EOC is unknown. This study aimed to evaluate the association between body composition changes and outcomes of patients with stage III EOC treated with PDS and adjuvant platinum-based chemotherapy.

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