Tasha Wainstein

Dr. Tasha Wainstein

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Research Focus & Metrics

Academic Career Length

14Years (2013-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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22 October 2022 in Journal of Genetic Counseling
Verified
Journal Article
Open access
TWTasha Wainstein
Tasha Wainstein
AEAlison M. Elliott
Alison M. Elliott
JAJehannine C. Austin
Jehannine C. Austin
An abundance of qualitative research is being conducted within the genetic counseling field. As this area of research expands, many within our community are “learning through doing”, an approach which is practical, but may lack theoretical grounding. This can result in study outputs that do not have the sort of utility for informing clinical practice that is the hallmark of excellent clinical qualitative research. Furthermore, our alignment as a discipline within the health sciences, which still tends to favor quantitative approaches, means that we may often be obliged to justify the use of qualitative methodologies, especially when we intend to use the findings for informing clinical practice. We aim to address these issues by providing guidance about how we, individually and collectively, might think about what excellent qualitative research can look like in our field. In addition to providing information and resources about current best‐practices, we discuss how quality can be ensured and evaluated. We seek to legitimize the idea of developing a philosophy of research in pursuit of establishing genetic counseling as an academic discipline. We argue that the principles, ethics, values, and practices of genetic counseling are sufficiently unique that establishing a discipline‐specific qualitative research framework is not only warranted, but essential. Ultimately, we hope that this paper can serve as a launching point from which additional discussion about qualitative research can emanate as we strive towards the elevation of this form of inquiry in our field.

17 November 2015 in BMC Cancer
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Journal Article
Open access
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FFFlavia Zita Francies
Flavia Zita Francies
TWTasha Wainstein
Tasha Wainstein
KLK. De Leeneer
K. De Leeneer
ACA. Cairns
A. Cairns
MMM. Murdoch
M. Murdoch
Kathleen ClaesKathleen Claes
Kathleen Claes
Current knowledge of the aetiology of hereditary breast cancer in the four main South African population groups (black, coloured, Indian and white) is limited. Risk assessments in the black, coloured and Indian population groups are challenging because of restricted information regarding the underlying genetic contributions to inherited breast cancer in these populations. We focused this study on premenopausal patients (diagnosed with breast cancer before the age of 50; n = 78) and triple negative breast cancer (TNBC) patients (n = 30) from the four South African ethnic groups. The aim of this study was to determine the frequency and spectrum of germline mutations in BRCA1, BRCA2 and PALB2 and to evaluate the presence of the CHEK2 c.1100delC allele in these patients. In total, 108 South African breast cancer patients underwent mutation screening using a Next-Generation Sequencing (NGS) approach in combination with Multiplex Ligation-dependent Probe Amplification (MLPA) to detect large rearrangements in BRCA1 and BRCA2. In 13 (12 %) patients a deleterious mutation in BRCA1/2 was detected, three of which were novel mutations in black patients. None of the study participants was found to have an unequivocal pathogenic mutation in PALB2. Two (white) patients tested positive for the CHEK2 c.1100delC mutation, however, one of these also carried a deleterious BRCA2 mutation. Additionally, six variants of unknown clinical significance were identified (4 in BRCA2, 2 in PALB2), all in black patients. Within the group of TNBC patients, a higher mutation frequency was obtained (23.3 %; 7/30) than in the group of patients diagnosed before the age of 50 (7.7 %; 6/78). This study highlights the importance of evaluating germline mutations in major breast cancer genes in all of the South African population groups. This NGS study shows that mutation analysis is warranted in South African patients with triple negative and/or in premenopausal breast cancer.

11 October 2013 in South African Medical Journal
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Journal Article
Open access
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AKAmanda Krause
Amanda Krause
TWTasha Wainstein
Tasha Wainstein
FEFahmida B Essop
Fahmida B Essop
QGQuintin Goodyear
Quintin Goodyear
Background. Haemoglobinopathies are seen mostly in regions where malaria occurs or has occurred, but population migration has resulted in affected individuals being identified in many countries globally. The first molecular genetics services for diagnostic testing and prenatal diagnosis were established, both worldwide and in South Africa (SA), for haemoglobinopathies. Objective. To analyse the diagnostic service offered by the Division of Human Genetics, National Health Laboratory Service and University of the Witwatersrand, from 1983 to 2012. Methods. A retrospective file analysis (N=1 249) was performed for all individuals who had molecular genetic testing for α-thalassaemia, β-thalassaemia and sickle cell anaemia to examine indications for testing, population origins of patients and molecular genetics findings. Results. The α-thalassaemia testing was requested predominantly to explain microcytic hypochromic haematological indices. Five α-globin deletions were identified, the most common being the -α3.7, in individuals of different ethnicities. For β-thalassaemia and sickle cell anaemia, most testing was performed for prenatal diagnosis purposes. For sickle cell anaemia, most prenatal tests were requested by African families. The β-thalassaemia families were mostly of Indian or Mediterranean origin. The most common mutation identified in all Indian groups was IVS1 nt5 (G>C) (c.92+5G>C) and in individuals from the Mediterranean, IVS1 nt110 (G>A) (c.93-21G>A). Conclusion. The molecular genetics service for haemoglobinopathies in SA is comprehensive and specific to the needs of local ethnic groups. Clinically significant haemoglobinopathies occur at significant frequencies in specific high-risk ethnic groups. Appropriate screening programmes should be initiated so that genetic counselling and reproductive options can be offered.

3 February 2016 in South African Medical Journal
Verified
Journal Article
Open access
PDF file
HSHeather Jessica Seymour
Heather Jessica Seymour
TWTasha Wainstein
Tasha Wainstein
SMShelley Macaulay
Shelley Macaulay
THTabitha Haw
Tabitha Haw
AKAmanda Krause
Amanda Krause
Breast cancer in high-risk Afrikaner families: Is BRCA founder mutation testing sufficient?

11 October 2013 in South African Medical Journal
Verified
Journal Article
Open access
PDF file
TWTasha Wainstein
Tasha Wainstein
RKRobyn Kerr
Robyn Kerr
CMClaire L Mitchell
Claire L Mitchell
SMSmita Madaree
Smita Madaree
FEFahmida B Essop
Fahmida B Essop
AKAmanda Krause
Amanda Krause
Fanconi anaemia in black South African patients heterozygous for the FANCG c.637-643delTACCGCC founder mutation

9 February 2017 in Familial Cancer
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Journal Article
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CFCandice Feben
Candice Feben
CSCareni Spencer
Careni Spencer
ALAnneline Lochan
Anneline Lochan
NLNakita Laing
Nakita Laing
KFKaren Fieggen
Karen Fieggen
AKAmanda Krause
Amanda Krause