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Physiology, Cancer Research, Molecular Biology, Functional Genomics
South Africa

Biography

I am a dedicated researcher with nine years of experience in physiological sciences, oncology, and molecular biology. I recently completed my PhD in Physiological Sciences at Stellenbosch University, where I investigated the functional impact of a rare TP53 germline variant identified in breast cancer patients. My research assessed its effects on cell proliferation, cell death, senescence, migration, immune destruction, and coagulation using a translational ex vivo model. In addition, I established a 3D co-culture system by isolating peripheral blood mononuclear cells from patients to evaluate their impact on breast cancer spheroids. I also contributed to the development of a functional genomics pipeline for the Pathology-Supported Genetic Testing framework in South Africa, enhancing the classification of rare variants and improving the clinical utility of whole-exome and genome sequencing in precision oncology. My passion lies in unravelling the molecular mechanisms driving cancer progression and treatment resistance, with the goal of advancing medical management and improving patient outcomes.

Activities

Employment (5)

Stellenbosch University: Stellenbosch, Western Cape, ZA

2025-04-01 to present | Postdoctoral Fellow (Department of Physiological Sciences)
Employment
Source: Self-asserted source
Claudia Christowitz

Stellenbosch University: Stellenbosch, Western Cape, ZA

2023-07-01 to 2024-10-31 | Demi and Practical Convenor (Department of Physiological Sciences)
Employment
Source: Self-asserted source
Claudia Christowitz

Central Analytical Facility: Stellenbosch, Western Cape, ZA

2024-02-01 to 2024-05-31 | Flow Cytometry Assistant (Flow Cytometry Unit)
Employment
Source: Self-asserted source
Claudia Christowitz

Stellenbosch University: Stellenbosch, Western Cape, ZA

2018-02-01 to 2022-06-30 | Biostatistics Teaching Assistant (African Cancer Institute)
Employment
Source: Self-asserted source
Claudia Christowitz

Stellenbosch University: Stellenbosch, Western Cape, ZA

2019-04-01 to 2020-03-31 | DST-NRF Internship (Department of Physiological Sciences)
Employment
Source: Self-asserted source
Claudia Christowitz

Education and qualifications (4)

Stellenbosch University: Stellenbosch, Western Cape, ZA

2020-08-14 to 2025-03-25 | PhD in Physiological Sciences (Physiological Sciences)
Education
Source: Self-asserted source
Claudia Christowitz

Stellenbosch University: Stellenbosch, Western Cape, ZA

2017 to 2018 | MPhil in Cancer Science (African Cancer Institute)
Education
Source: Self-asserted source
Claudia Christowitz

Stellenbosch University: Stellenbosch, Western Cape, ZA

2016 to 2016 | BSc (Hons) in Physiological Sciences (Department of Physiological Sciences)
Education
Source: Self-asserted source
Claudia Christowitz

Stellenbosch University: Stellenbosch, Western Cape, ZA

2013 to 2015 | BSc Human Life Sciences
Education
Source: Self-asserted source
Claudia Christowitz

Professional activities (1)

Stellenbosch University: Stellenbosch, Western Cape, ZA

2022-06-21 to present | Ordinary membership (Physiology Society of Southern Africa)
Membership
Source: Self-asserted source
Claudia Christowitz

Funding (4)

The functional impact of a rare germline TP53β N340D variant identified in breast cancer patients with the Li-Fraumeni-like syndrome

2023 to 2024 | Grant
National Research Foundation (Pretoria, Gauteng, ZA)
Source: Self-asserted source
Claudia Christowitz

The functional impact of a rare germline TP53β N340D variant identified in breast cancer patients with the Li-Fraumeni-like syndrome

2022 to 2022 | Grant
Stellenbosch University (Stellenbosch, Western Cape, ZA)
Source: Self-asserted source
Claudia Christowitz

The functional impact of a rare germline TP53β N340D variant identified in breast cancer patients with the Li-Fraumeni-like syndrome

2020 to 2020 | Grant
Ernst and Ethel Eriksen Trust (Bryanston, ZA)
Source: Self-asserted source
Claudia Christowitz

Investigating the mechanism of doxorubicin-induced drug resistance and tumour growth in a murine breast cancer model

2018 to 2018 | Grant
Harry Crossley Foundation (Cape Town, Western Cape, ZA)
Source: Self-asserted source
Claudia Christowitz

Works (7)

Inflammation and thrombotic risk in late-stage cervical cancer: An exploratory study of coagulation and cytokine profiles in a South African cohort

Cytokine
2024-12 | Journal article
Part of ISSN: 1043-4666
Contributors: Louise Pauline Fourie; Claudia Christowitz; Carla Eksteen; Haynes Van der Merwe; Hennie Botha; Chantelle Venter; Anna-Mart Engelbrecht
Source: Self-asserted source
Claudia Christowitz

Incorporating functional genomics into the pathology-supported genetic testing framework implemented in South Africa: A future view of precision medicine for breast carcinomas

Mutation Research - Reviews in Mutation Research
2024-04-15 | Journal article
Part of ISSN: 1383-5742
Contributors: Claudia Christowitz; Daniel W. Olivier; Johann W. Schneider; Maritha J. Kotze; Anna-Mart Engelbrecht
Source: Self-asserted source
Claudia Christowitz

P142 Functional impact of a rare germline TP53 variant (NM_001126114.2, c.1018A>G, p.N340D) in a family with the Li-Fraumeni-like syndrome

The Breast
2023-04 | Journal article
Part of ISSN: 0960-9776
Contributors: D.W. Olivier; C. Christowitz; N. van der Merwe; B. Glanzmann; N.W. McGregor; E.J. van Rensburg; J. Oosthuizen; N.C. van der Merwe; M.J. Kotze; F.M. Pienaar et al.
Source: Self-asserted source
Claudia Christowitz

Obese mammary tumour-bearing mice are highly sensitive to doxorubicin-induced hepatotoxicity

BMC Cancer
2022-11-30 | Journal article
Part of ISSN: 1471-2407
Contributors: Megan Sedeman; Claudia Christowitz; Louis de Jager; Anna-Mart Engelbrecht
Source: Self-asserted source
Claudia Christowitz

Insulin-mediated immune dysfunction in the development of preeclampsia

Journal of Molecular Medicine
2021-07 | Journal article
Part of ISSN: 0946-2716
Part of ISSN: 1432-1440
Contributors: Gustav van Niekerk; Claudia Christowitz; Anna-Mart Engelbrecht
Source: Self-asserted source
Claudia Christowitz

Insulin as an immunomodulatory hormone

Cytokine & Growth Factor Reviews
2020-04 | Journal article
Part of ISSN: 1359-6101
Contributors: Gustav van Niekerk; Claudia Christowitz; Daleen Conradie; Anna-Mart Engelbrecht
Source: Self-asserted source
Claudia Christowitz

Mechanisms of doxorubicin-induced drug resistance and drug resistant tumour growth in a murine breast tumour model

BMC Cancer
2019-12 | Journal article
Part of ISSN: 1471-2407
Contributors: Claudia Christowitz; Tanja Davis; Ashwin Isaacs; Gustav van Niekerk; Suzel Hattingh; Anna-Mart Engelbrecht
Source: Self-asserted source
Claudia Christowitz