Marwan Al‐Hajeili

ORCID: 0000-0001-5486-8057
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About
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Research Areas
  • Cancer Genomics and Diagnostics
  • Lung Cancer Treatments and Mutations
  • Head and Neck Cancer Studies
  • Economic and Financial Impacts of Cancer
  • Pancreatic and Hepatic Oncology Research
  • Cervical Cancer and HPV Research
  • Cancer-related molecular mechanisms research
  • COVID-19 and healthcare impacts
  • Colorectal Cancer Treatments and Studies
  • Renal cell carcinoma treatment
  • Global Cancer Incidence and Screening
  • BRCA gene mutations in cancer
  • Breast Cancer Treatment Studies
  • Lung Cancer Research Studies
  • Lung Cancer Diagnosis and Treatment
  • HER2/EGFR in Cancer Research
  • Genetic factors in colorectal cancer
  • Brain Metastases and Treatment
  • Gastric Cancer Management and Outcomes
  • Venous Thromboembolism Diagnosis and Management
  • Thyroid Cancer Diagnosis and Treatment
  • Palliative Care and End-of-Life Issues
  • Multiple and Secondary Primary Cancers
  • Ear and Head Tumors
  • Cholangiocarcinoma and Gallbladder Cancer Studies

King Abdulaziz University
2015-2025

Saudi Aramco Medical Services Organization
2024

Dammam Central Hospital
2024

Royal Hospital
2024

University of Haripur
2024

Alfaisal University
2024

Khalifa University of Science and Technology
2024

Sulaiman Al Rajhi Colleges
2024

Almaarefa University
2024

King Saud bin Abdulaziz University for Health Sciences
2023-2024

691 Background: Pancreatic ductal adenocarcinoma (PDAC) has dismal clinical outcomes, even with existing treatment regimens. This study evaluates the characteristics and outcomes of patients locally advanced unresectable or de-novo metastatic PDAC in Saudi Arabia to provide real-world data that can be compared international benchmarks. Methods: is a retrospective, multicenter study. Patients diagnosed between January 2015 November 2023 were included. Data collected from 10 oncology centers...

10.1200/jco.2025.43.4_suppl.691 article EN Journal of Clinical Oncology 2025-01-27

According to the Saudi Cancer Registry's 2014 Incidence Report, colorectal cancer (CRC) is leading form of malignant among men and ranks third women. Raising awareness about CRC risk factors could lead a significant decline in incidence disease.To assess evaluate main barriers that might prevent individuals' participation screening.A self-administered survey was conducted over two days as part campaign Jeddah, Arabia March, 2018.The addressed issues regarding knowledge available screening...

10.4103/jfmpc.jfmpc_508_19 article EN cc-by-nc-sa Journal of Family Medicine and Primary Care 2019-01-01

Oral cavity squamous cell carcinoma (OCSCC) is a well-recognized malignancy of the head and neck. Studies on patients with early-stage oral cancer have shown that they develop locally recurring and/or regional lymph node metastasis, which results in disease-associated mortality. Thus, does not always present good prognoses. The study aimed to determine efficacy using worst pattern invasion (WPOI) other histopathological features, such as prognostic factors OCSCC, analyze impact resection...

10.3892/ol.2023.13661 article EN Oncology Letters 2023-01-04

Background The global incidence of thyroid cancer (TC) has increased significantly over the past decades. In Saudi Arabia, it is third most common among adults. This study aims to review clinical and histopathological characteristics TC in Arabia analyze size trend years. Methods We conducted a retrospective chart all differentiated poorly patients following up at tertiary care center Western region Arabia. All 11 years older, diagnosed between 2004 - 2018, with sufficient data were...

10.7759/cureus.8044 article EN Cureus 2020-05-10

To assess and compare the Caprini Padua risk assessment models (RAMs) for predicting venous thromboembolism (VTE) in hospitalized patients.

10.15537/smj.2024.45.4.20230954 article EN Saudi Medical Journal 2024-04-01

Administration of effective anticancer treatments should continue during pandemics. However, the outcomes curative and palliative coronavirus disease (COVID‑19) pandemic remain unclear. The present retrospective observational study aimed to determine 30‑day mortality morbidity COVID‑19 pandemic. Between March 1 June 30, 2020, all adults (n=2,504) with solid hematological malignancies irrespective cancer stage type at five large comprehensive centers in Saudi Arabia were included. was 5.1%...

10.3892/mco.2021.2244 article EN Molecular and Clinical Oncology 2021-02-26

We conducted a Phase II, clinical trial to evaluate the efficacy and safety of biweekly gemcitabine paclitaxel (GEMTAX) regimen as second-line treatment in patients with recurrent or metastatic unresectable, squamous cell carcinoma head neck (SCCHN). The primary endpoint was response rate.Patients unresectable platinum refractory SCCHN, who had performance status ≤2 adequate organ function, were eligible. Gemcitabine (3000 mg/m(2) intravenous) (150 given on days 1 15of 4 weeks cycle, until...

10.4103/2231-0770.154195 article EN cc-by-nc-nd Avicenna Journal of Medicine 2015-03-29

Introduction Accurate classification of lung cancer into primary and metastatic carcinomas is critical for treatment approaches. Immunohistochemistry (IHC) has always been pivotal in unveiling the diverse cell differentiation lineages present by using specific biomarkers such as TTF1 p63/p40, which closely reflect relationship between genotype phenotype.. Methods A retrospective cross-sectional study was conducted to evaluate 57 Tru-Cut biopsies over two years, from 2020-2022. Tumour...

10.7759/cureus.32956 article EN Cureus 2022-12-26

<b><i>Objective:</i></b> Although cytology testing is considered a valuable method to diagnose tumors that are difficult access such as hepato-biliary-pancreatic (HBP) malignancies, its diagnostic accuracy remains unclear. We therefore aimed investigate the of for HBP tumors. <b><i>Study Design:</i></b> performed<b><i></i></b> retrospective study all samples were used confirm radiologically detected between 2002 and...

10.1159/000489549 article EN Acta Cytologica 2018-01-01

<h3>Objectives:</h3> To investigate the long-term outcomes of differentiated thyroid cancer (DTC) and predictive factors for excellent incomplete responses to therapy on follow-up patients. <h3>Methods:</h3> A retrospective chart review analysis was carried out at King Abdulaziz University Hospital, Jeddah, Saudi Arabia. Demographic, histological, therapeutic data were collected from patients older than 13 years time diagnosis, with a minimum 18 months. Outcomes divided into excellent,...

10.15537/smj.2024.45.2.20230596 article EN Saudi Medical Journal 2024-02-01
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