Marjanka K. Schmidt
- BRCA gene mutations in cancer
- Breast Cancer Treatment Studies
- Genetic Associations and Epidemiology
- Cancer Genomics and Diagnostics
- Nutrition, Genetics, and Disease
- Cancer Risks and Factors
- Global Cancer Incidence and Screening
- Genetic factors in colorectal cancer
- Estrogen and related hormone effects
- Bioinformatics and Genomic Networks
- Breast Lesions and Carcinomas
- HER2/EGFR in Cancer Research
- Gene expression and cancer classification
- Genomic variations and chromosomal abnormalities
- Genomics and Chromatin Dynamics
- Epigenetics and DNA Methylation
- Advanced Breast Cancer Therapies
- Cancer-related Molecular Pathways
- DNA Repair Mechanisms
- Metabolism, Diabetes, and Cancer
- Molecular Biology Techniques and Applications
- Cancer Immunotherapy and Biomarkers
- Ethics in Clinical Research
- Genomics and Rare Diseases
- RNA modifications and cancer
The Netherlands Cancer Institute
2016-2025
Leiden University Medical Center
2006-2025
Oncode Institute
2016-2025
Leiden University
2019-2024
Erasmus MC Cancer Institute
2015-2023
Klinik für Frauenheilkunde
2023
University of Cambridge
2014-2023
University of Oulu
2023
University of California, Irvine
2023
Dutch Cancer Society
2011-2022
Previous studies have suggested that breast cancer risk factors are associated with estrogen receptor (ER) and progesterone (PR) expression status of the tumors.
Common variation on 14q24.1, close to RAD51B, has been associated with breast cancer: rs999737 and rs2588809 the risk of female cancer rs1314913 male cancer. The aim this study was investigate role RAD51B variants in predisposition, particularly context familial Finland. We sequenced coding region 168 Finnish patients from Helsinki for identification possible recurrent founder mutations. In addition, we studied known rs999737, rs2588809, SNPs haplotypes 44,791 cases 43,583 controls 40...
Genetic variations, such as single nucleotide polymorphisms (SNPs) in microRNAs (miRNA) or the miRNA binding sites may affect dependent gene expression regulation, which has been implicated various cancers, including breast cancer, and alter individual susceptibility to cancer. We investigated associations between related SNPs cancer risk. First we evaluated 2,196 a case-control study combining nine genome wide association studies (GWAS). Second, further 42 with suggestive evidence for using...
Breast cancer (BC) risk prediction allows systematic identification of individuals at highest and lowest risk. We extend the Ovarian Analysis Disease Incidence Carrier Estimation Algorithm (BOADICEA) model to incorporate effects polygenic scores (PRS) other factors (RFs).
Data for multiple common susceptibility alleles breast cancer may be combined to identify women at different levels of risk. Such stratification could guide preventive and screening strategies. However, empirical evidence genetic risk is lacking. We investigated the value using 77 cancer-associated single nucleotide polymorphisms (SNPs) stratification, in a study 33 673 cases 381 control European origin. tested all possible pair-wise multiplicative interactions constructed 77-SNP polygenic...
Mutations in the chromatin remodeling gene ARID1A have recently been identified majority of ovarian clear cell carcinomas (OCCCs). To determine prevalence mutations other tumor types, we evaluated 759 malignant neoplasms including those pancreas, breast, colon, stomach, lung, prostate, brain, and blood (leukemias). We truncating 6% studied; nontruncating somatic were an additional 0.4% neoplasms. most commonly found gastrointestinal samples with 12 119 (10%) colorectal 10 100 gastric...
Observational epidemiological studies have shown that high body mass index (BMI) is associated with a reduced risk of breast cancer in premenopausal women but an increased postmenopausal women. It unclear whether this association mediated through shared genetic or environmental factors.
PREDICT is a breast cancer prognostic and treatment benefit model implemented online. The overall fit of the has been good in multiple independent case series, but shown to underestimate specific mortality women diagnosed under age 40. Another limitation use discrete categories for tumour size node status resulting 'step' changes risk estimates on moving between categories. We have refitted using original cohort cases from East Anglia with updated survival time order take into account at...
The rarity of mutations in PALB2, CHEK2 and ATM make it difficult to estimate precisely associated cancer risks. Population-based family studies have provided evidence that at least some these are with breast risk as high those rare BRCA2 mutations. We aimed the relative risks specific variants via a multicentre case-control study.
Abstract Background The onset of the COVID-19 pandemic forced Dutch national screening program to a halt and increased burden on health care services, necessitating introduction specific breast cancer treatment recommendations from week 12 2020. We aimed investigate impact diagnosis, stage initial cancer. Methods Women included in Netherlands Cancer Registry diagnosed during four periods weeks 2–17 2020 were compared with reference data 2018/2019 (averaged). Weekly incidence was calculated...
Triple-negative breast cancer (TNBC) is considered aggressive, and therefore, virtually all young patients with TNBC receive (neo)adjuvant chemotherapy. Increased stromal tumor-infiltrating lymphocytes (sTILs) have been associated a favorable prognosis in TNBC. However, whether this association holds for who are node-negative (N0), (< 40 years), chemotherapy-naïve, thus can be used chemotherapy de-escalation strategies, unknown.We selected N0 diagnosed between 1989 2000 from Dutch...
Rare germline genetic variants in several genes are associated with increased breast cancer (BC) risk, but their precise contributions to different disease subtypes unclear. This information is relevant guidelines for gene panel testing and risk prediction.To characterize tumors BC susceptibility large-scale population- or hospital-based studies.The multicenter, international case-control analysis of the BRIDGES study included 42 680 patients 46 387 control participants, comprising women...