Publications by authors named "Martha H Thomas"

Patients with Li-Fraumeni syndrome are recommended to follow a comprehensive surveillance protocol, but the demanding nature may limit adherence. We sought to identify barriers to adherence, and to determine whether screening fatigue and financial hardship are contributors. A 39-item online survey was developed and distributed to patients presenting to a LFS clinic between 2017 and 2022.

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Background: High-risk surveillance for patients with Li-Fraumeni syndrome (LFS) has shown a stage shift and improved overall survival, but is demanding. Our objective was to evaluate surveillance adherence in a population of patients with LFS presenting for high-risk care.

Methods: A retrospective analysis of surveillance adherence of adult patients with LFS at a single institution was performed.

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Article Synopsis
  • Bloom syndrome is a rare genetic disorder with fewer than 300 cases documented and is marked by chromosome instability, growth issues, and a high risk of cancer, especially leukemia.
  • The disorder has a higher prevalence in Ashkenazi Jews, but the text discusses a Mexican American family with a specific gene mutation that has been linked to the syndrome.
  • In this family, three siblings show symptoms of Bloom syndrome, and one sibling was diagnosed with rhabdomyosarcoma, indicating a potential common genetic origin for this mutation in the Hispanic Mexican population.
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Aim: Precancer identification of women with hereditary breast and ovarian cancer (HBOC) could prevent 20% of these ovarian cancers. The objective was to determine whether standardized Facing Our Risk of Cancer Empowered (FORCE) materials are acceptable, improve knowledge of HBOC and increase disclosure to family members.

Methods: A prospective cohort of women with breast or ovarian cancer was identified prior to genetic testing.

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Recent data suggest that BRCA mutation carriers younger than 40 may not benefit from mammography in addition to MRI. Our objective was to evaluate screening modalities utilized in a high-risk population. Clinicopathologic data were abstracted for patients followed in a high risk clinic from 2007 to 2017.

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The majority of our hereditary breast cancer genes incur not only an increased risk for breast cancer but for other malignancies as well. Knowing whether an individual carries a pathogenic variant in a hereditary breast cancer gene can affect not only screening for the patient but for his or her family members as well. Identifying and appropriately testing individuals via multigene panels allows for risk reduction and early surveillance in at-risk individuals.

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Historically in cancer genetic counseling, when a pathogenic variant is found which explains the cancers in the family, at risk family members are offered site-specific testing to identify whether or not they have the previously identified pathogenic variant. Factors such as turnaround times, cost, and insurance coverage all made site-specific testing the most appropriate testing option; however, as turnaround times and costs have substantially dropped and the recognition of double heterozygous families and families with nontraditional presentations has increased, the utility of site-specific testing should be questioned. We present four cases where ordering site-specific testing would have missed a clinically relevant pathogenic variant which raises the question of whether or not site-specific testing should be regularly used in cancer genetic testing.

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Lynch syndrome (LS) is defined by germline mutations in DNA mismatch repair (MMR) genes, and affected patients are at high risk for multiple cancers. Reflexive testing for MMR protein loss by immunohistochemistry (IHC) is currently only recommended for colorectal and endometrial cancers, although upper tract urothelial carcinoma (UTUC) is the third-most common malignancy in patients with LS. To study the suitability of universal MMR IHC screening for UTUC, we investigated MMR expression and microsatellite status in UTUC in comparison to bladder UC (BUC), and evaluated the clinicopathologic features of UTUC.

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The world of hereditary cancers has seen exponential growth in recent years. While hereditary breast and ovarian cancer and Lynch syndrome account for the majority of mutations encountered by gynecologists, newly identified deleterious genetic mutations continue to be unearthed with their associated risks of malignancies. However, these advances in genetic cancer predispositions then force practitioners and their patients to confront the uncertainties of these less commonly identified mutations and the fact that there is limited evidence to guide them in expected cancer risk and appropriate risk-reduction strategies.

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