22 results match your criteria: "University of Witwatersrand Faculty of Health Sciences[Affiliation]"
PLoS One
November 2024
Cancer Care: Clinical & Radiation Oncology, Cape Town, South Africa.
Intravenous pembrolizumab 400 mg every 6 weeks was approved across tumor types based on pharmacokinetic modeling, which showed exposures consistent with previous standard dosing of 200 mg or 2 mg/kg every 3 weeks, and early results of cohort B of the phase 1 KEYNOTE-555 study. Results after ≥1 year of potential follow-up for all patients in cohort B of KEYNOTE-555 are presented. Patients aged ≥18 years with previously untreated stage III/IV melanoma received pembrolizumab 400 mg every 6 weeks for ≤18 cycles.
View Article and Find Full Text PDFVaccine
November 2024
Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD, USA.
Cervical cancer is a major cause of morbidity and mortality globally with a disproportionate impact on women in low- and middle-income countries. In 2021, the World Health Organization (WHO) called for increased vaccination, screening, and treatment to eliminate cervical cancer. However, even with widespread rollout of human papillomavirus (HPV) prophylactic vaccines, millions of women who previously acquired HPV infections will remain at risk for progression to cancer for decades to come.
View Article and Find Full Text PDFJCO Glob Oncol
June 2024
Emeritus Professor, Division of Medical Oncology, University of Witwatersrand Faculty of Health Sciences, Johannesburg, South Africa.
Quality improvement (QI) programs have rapidly grown in health care over recent years. Despite increasing evidence of successful QI initiatives resulting in improved outcomes, the adoption and implementation of QI programs remain a challenge worldwide. This paper briefly describes political and administrative barriers that impede the implementation of QI programs, including political and ideological factors, socioeconomic and educational barriers, and barriers related to data collection, privacy, and security.
View Article and Find Full Text PDFPLOS Glob Public Health
October 2023
Faculty of Health Sciences, Strengthening Oncology Services Research Unit, University of the Witwatersrand, Johannesburg, South Africa.
Glob Health Action
December 2023
SAMRC/Wits Developmental Pathways for Health Research Unit, Department of Paediatrics, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa.
There is a rising noncommunicable disease (NCD) burden in low- and middle-income countries. Sub-Saharan Africa (SSA) bears a higher burden than the global average with South Africa (SA) enduring the highest regional burden. SA among other southern African countries also bears a high prevalence of HIV and other chronic communicable diseases.
View Article and Find Full Text PDFBreast Cancer Res Treat
August 2023
Department of Internal Medicine, University of Witwatersrand Faculty of Health Sciences, 7 York Road, Parktown, Johannesburg, South Africa.
Purpose: Treatment decision making for patients with breast cancer increasingly depends on analysis of markers or systems for estimating risk of breast cancer recurrence. Breast cancer intrinsic subtypes and risk of recurrence (ROR) scores have been found to be valuable in predicting survival and determining optimal treatment for individual patients. We studied the association of breast cancer survival with the PAM50 gene expression assay in HIV-positive and HIV-negative patients.
View Article and Find Full Text PDFOncologist
December 2021
Division of Medical Oncology, University of Witwatersrand Faculty of Health Sciences, Johannesburg, South Africa.
Recent trends in cancer epidemiology in low‐ and middle‐income countries show the need for urgent action. This article focuses on sub‐Saharan Africa, where populations are showing an increased risk for diseases associated with the Western lifestyle, including cancer.
View Article and Find Full Text PDFBreast
October 2021
Non-Communicable Diseases Research Division, Wits Health Consortium (PTY) Ltd, 31 Princess of Wales Building, Johannesburg, 2193 South Africa; Department of Medicine, University of Witwatersrand Faculty of Health Sciences, 7 York Road Johannesburg, South Africa.
Purpose: Breast cancer outcomes in sub-Saharan Africa is reported to be poor, with an estimated five-year survival of 50% when compared to almost 90% in high-income countries. Although several studies have looked at the effect of HIV in breast cancer survival, the effect of ARTs has not been well elucidated.
Methods: All females newly diagnosed with invasive breast cancer from May 2015-September 2017 at Charlotte Maxeke Johannesburg Academic and Chris Hani Baragwanath Academic Hospital were enrolled.
Breast Cancer Res Treat
August 2021
Department of Medicine, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA.
Purpose: Advanced breast cancer (BC) at diagnosis is common in sub-Saharan Africa (SSA), including among women living with HIV (WLWH). In public hospitals across South Africa (SA), 10-15% of women present with stage IV BC, compared to < 5% in the United States (US); 20% of new BC diagnoses in SA are in WLWH. We evaluated the impact of HIV on overall survival (OS) among women with stage IV BC.
View Article and Find Full Text PDFBMJ
January 2021
SAMRC Centre for Health Economics and Decision Science, PRICELESS SA University of Witwatersrand Faculty of Health Sciences, School of Public Health, Johannesburg, South Africa.
The political economy of covid-19 reflects longstanding patterns of resource extraction linked to racial discrimination, marginalisation, and colonialism, write
View Article and Find Full Text PDFGynecol Oncol
October 2020
Clínica Universidad de Navarra, Madrid, Spain.
Objective: Adding bevacizumab to cisplatin-paclitaxel for advanced cervical cancer significantly improves overall and progression-free survival. We evaluated bevacizumab with a widely used carboplatin-paclitaxel backbone.
Methods: Patients with metastatic/recurrent/persistent cervical cancer not amenable to curative surgery and/or radiotherapy received 3-weekly bevacizumab 15 mg/kg, paclitaxel 175 mg/m, and carboplatin AUC 5 until progression or unacceptable toxicity.
Int J Technol Assess Health Care
April 2020
SA MRC/ Wits Centre for Health Economics and Decision Science-PRICELESS SA, University of Witwatersrand Faculty of Health Sciences School of Public Health, Johannesburg, South Africa.
Objectives: Health technology assessment (HTA) is a cost-effective resource allocation tool in healthcare decision-making processes; however, its use is limited in low-income settings where countries fall short on both absorptive and technical capacity. This paper describes the journey of the introduction of HTA into decision-making processes through a case study revising the National Essential Medicines List (NEMLIT) in Tanzania. It draws lessons on establishing and strengthening transparent priority-setting processes, particularly in sub-Saharan Africa.
View Article and Find Full Text PDFBreast
February 2019
Non-Communicable Diseases Research Division, Wits Health Consortium (PTY) Ltd, 31 Princess of Wales Building, Johannesburg, 2193, South Africa; Department of Medicine, University of Witwatersrand Faculty of Health Sciences, 7 York Road Johannesburg, South Africa.
Purpose: Breast cancer is the most common cancer in women and a leading cause of cancer-related mortality worldwide. South Africa has the largest global burden of HIV infection and the largest anti-retroviral treatment (ART) program. This study aimed to analyse the association of HIV and ART use with breast cancer clinico-pathological characteristics.
View Article and Find Full Text PDFPLoS One
March 2018
Non-Communicable Diseases Research Division, Wits Health Consortium (PTY) Ltd, Johannesburg, South Africa.
Purpose: Reported breast cancer incidence is rising in South Africa, where some women are diagnosed late and have poor outcomes. We studied patient and provider factors associated with clinical stage at diagnosis among women diagnosed at the Chris Hani Baragwanath Academic Hospital in Soweto, Johannesburg in 2015-2016.
Methods: From face-to-face interviewer-administered questionnaires we compared self-reported socioeconomics, demographics, comorbidities, risk factors, personal and health system barriers, and from patient clinical records, clinical staging, receptor subtype, and tumor grade among 499 consecutive women newly diagnosed with advanced stage (III/IV) breast cancer versus those diagnosed early (stage 0/I/II).
Objectives: Aflibercept (ziv-aflibercept) significantly improves progression-free (PFS) and overall survival (OS) when added to 5-fluorouracil, leucovorin and irinotecan (FOLFIRI), compared with FOLFIRI alone, in patients with metastatic colorectal cancer previously treated with oxaliplatin-based therapy. This subset analysis of the VELOUR study investigates aflibercept plus FOLFIRI versus placebo plus FOLFIRI according to age.
Methods: Efficacy and safety were analyzed by treatment arm and age (≥ or <65years).
Am Soc Clin Oncol Educ Book
January 2017
From the University of Jordan, Amman, Jordan; University of Witwatersrand Faculty of Health Sciences, Johannesburg, South Africa; Abramson Cancer Center, University of Pennsylvania, Philadelphia, PA.
Cancer is rapidly becoming a major health care problem, especially in developing countries, where 60% of the world's total new cases are diagnosed. The success of new antineoplastic medicines and modern radiation devices to cure a good proportion of patients with cancer and to alleviate the suffering of many more has been achieved at a dramatic cost. Therefore, it has become mandatory for health care authorities and pharmaceutical companies to cooperate to use and develop resources in an efficient manner to improve health care delivery to patients with cancer worldwide.
View Article and Find Full Text PDFLancet Oncol
July 2014
Amgen, Thousand Oaks, CA, USA.
Lancet Oncol
May 2014
Amgen Inc, Thousand Oaks, CA, USA.
Background: The anti-EGFR monoclonal antibodies panitumumab and cetuximab are effective in patients with chemotherapy-refractory wild-type KRAS exon 2 metastatic colorectal cancer. We assessed the efficacy and toxicity of panitumumab versus cetuximab in these patients.
Methods: For this randomised, open-label, phase 3 head-to-head study, we enrolled patients (from centres in North America, South America, Europe, Asia, Africa, and Australia) aged 18 years or older with chemotherapy-refractory metastatic colorectal cancer, an Eastern Cooperative Oncology Group (ECOG) performance status of 2 or less, and wild-type KRAS exon 2 status.
Ann Oncol
July 2014
Department of Global Development, Amgen, Inc., Thousand Oaks, USA.
Background: The Panitumumab Randomized trial In combination with chemotherapy for Metastatic colorectal cancer to determine Efficacy (PRIME) demonstrated that panitumumab-FOLFOX4 significantly improved progression-free survival (PFS) versus FOLFOX4 as first-line treatment of wild-type (WT) KRAS metastatic colorectal cancer (mCRC), the primary end point of the study.
Patients And Methods: Patients were randomized 1:1 to panitumumab 6.0 mg/kg every 2 weeks + FOLFOX4 (arm 1) or FOLFOX4 (arm 2).
Purpose: The antiangiogenic agent aflibercept (ziv-aflibercept in the United States) in combination with 5-fluorouracil, leucovorin and irinotecan (FOLFIRI) significantly improved survival in a phase III study of patients with metastatic colorectal cancer (mCRC) previously treated with an oxaliplatin-based regimen. In the present analysis, outcomes were evaluated in prespecified subgroups to assess the consistency of the treatment effect.
Methods: Patients were randomised to receive FOLFIRI plus aflibercept or placebo every 2weeks until disease progression or unacceptable toxicity occurred.
Health Policy Plan
September 2014
International Injury Research Unit, Bloomberg School of Public Health, Johns Hopkins University, 615 North Wolfe Street, Baltimore, MD 21205, USA, Department of Surgery, Virginia Commonwealth University Medical Center, 1200 East Broad Street, Richmond, VA 23298, USA, University of Witwatersrand Faculty of Health Sciences, School of Public Health, 27 St Andrews Road, Parktown, Johannesburg 2193, Medical Reserach Council, Wits Rural Public Health and Health Transitions Research Unit, School of Public Health, University of Witwatersrand, 7 York Road, Parktown 2193, Johannesburg, South Africa
Introduction: Injuries are a significant cause of mortality and morbidity, of which more than 90% occur in low- and middle-income countries (LMICs). Given the extent of this burden being confronted by LMICs, there is need to place injury prevention at the forefront of public health initiatives and to understand the costs associated with injury. The aim of this article is to describe the extent to which injury-related costing studies have been conducted in LMICs.
View Article and Find Full Text PDFJ Oral Maxillofac Surg
June 2011
Division of Oral Pathology, University of Witwatersrand Faculty of Health Sciences, Johannesburg, South Africa.