Publications by authors named "Vierkant R"

Background Aims: Metabolic dysfunction-associated steatotic liver disease (MASLD) affects about a third of adults worldwide and is projected soon to be the leading cause of cirrhosis. It occurs when fat accumulates in hepatocytes and can progress to metabolic dysfunction-associated steatohepatitis (MASH), liver cirrhosis, and hepatocellular carcinoma. MASLD pathogenesis is believed to involve a combination of genetic and environmental risk factors.

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Background: Benign breast disease (BBD) increases breast cancer (BC) risk progressively for women diagnosed with nonproliferative change, proliferative disease without atypia (PDWA), and atypical hyperplasia (AH). Leveraging data from 18 704 women in the Mayo BBD Cohort (1967-2013), we evaluated temporal trends in BBD diagnoses and how they have influenced associated BC risk over 4 decades.

Methods: BC risk trends associated with BBD were evaluated using standardized incidence ratios (SIRs) and age-period-cohort modeling across 4 eras-premammogram (1967-1981), precore needle biopsy (CNB) (1982-1992), transition to CNB (1993-2001), and CNB era (2002-2013).

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Background: Acellular dermal matrices (ADM) are an adjunct in implant-based breast reconstruction. While clinical outcomes have generally been equivocal between brands, a cost analysis between these brands has yet to be conducted. This study reports a single, academic institution's experience with 2 ADM brands in breast reconstruction and provides data on clinical and financial outcomes.

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Background: Controversy exists around the optimal timing of resection of nevus sebaceous (NS). The authors aim to determine optimal timing of NS resection and identify predictors of surgical outcomes and secondary intralesional neoplasms.

Methods: Retrospective chart review of all patients with biopsy-proven NS diagnosis treated at the authors' institution between 1987 and 2024.

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Objective: The pattern, rate, and natural history of bone flap resorption following cranioplasty with frozen, autologous bone flap has not been fully defined. The authors sought to quantify the progression and natural history of bone flap resorption.

Methods: Patients who had craniectomy and delayed cranioplasty with stored, frozen bone flap between 2012 and 2022 were included in this study.

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Objective: To assess whether the mode and formatting of invitations affect enrollment in a large, decentralized study.

Patients And Methods: Between July 1, 2022, and October 30, 2022, we prospectively compared various approaches to enroll patients in the Tapestry DNA Sequencing Research Study, a decentralized exome-sequencing study. In phase 1, patients were randomized to receive invitations via the electronic health record (EHR) patient portal or email (cohort 1, 69,852 patients).

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Objective: To execute a large-scale, decentralized, clinical-grade whole exome sequencing study, coined Tapestry, for clinical practice, research discovery, and genomic education.

Patients And Methods: Between July 1, 2020, and May 31, 2024, we invited 1,287,608 adult Mayo Clinic patients to participate in Tapestry. Of those contacted, 114,673 patients were consented and 98,222 (65.

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Background: Retrospective studies suggest that some breast cancer survivors report treatment-associated hair loss or thinning years after their diagnosis. This study investigates frequency and perceptions of alopecia persisting 6 years after patients' breast cancer diagnoses.

Methods: Breast cancer survivors participating in the Mayo Clinic Breast Disease Registry (MCBDR) were mailed a survey 6 years after diagnosis.

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Purpose: Most breast biopsies are diagnosed as benign breast disease (BBD), with 1.5- to fourfold increased breast cancer (BC) risk. Apart from pathologic diagnoses of atypical hyperplasia, few factors aid in BC risk assessment of these patients.

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Article Synopsis
  • The study reviewed 401 patients who underwent genetic testing for familial hypocalciuric hypercalcemia, with 83% testing negative for mutations and only 11% testing positive.
  • Findings showed that patients with mutations had lower median urine calcium levels compared to non-mutated patients, but no significant difference in parathyroid hormone levels across groups.
  • The effectiveness of urine calcium measurements and calcium-to-creatinine clearance ratios in identifying familial hypocalciuric hypercalcemia was found to be poor, with areas under the curve indicating low diagnostic performance.
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Background: There has been a shift in the treatment of fistula-in-ano towards a focus on preservation of continence while simultaneously eradicating disease. Utilization of radially emitting diode laser catheters to ablate fistula tracks has been described since 2011 with heterogenous studies publishing success rates ranging from 20% to 89%.

Objective: Present our experience managing solitary transsphincteric fistulas of cryptoglandular origin with radially emitting diode laser.

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  • The study aimed to understand the link between microcalcifications in benign breast disease (BBD) and the risk of developing ductal carcinoma in situ (DCIS) or invasive breast cancer (IBC).
  • Researchers analyzed data from nearly 5,000 BBD biopsies and used statistical models to assess the impact of microcalcifications on cancer risk.
  • Findings showed that while microcalcifications were more common in older patients, they did not significantly increase the risk of developing DCIS or IBC compared to those without calcifications.
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  • Gastric polyposis is prevalent in familial adenomatous polyposis (FAP) syndrome, but its link to gastric cancer (GC) risk remains unclear.
  • A study at Mayo Clinic analyzed 337 FAP patients over 10.4 years, finding that 87% had gastric polyps, yet only 2% developed GC, mostly associated with high-grade dysplasia (HGD) or larger polyps.
  • The research concluded that while the overall risk of GC in FAP is low, specific surveillance and endoscopic interventions are crucial for improving early detection and management.
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  • Low-grade appendiceal mucinous neoplasms (LAMNs) have a low recurrence risk after surgery, with only 4% of patients developing pseudomyxoma peritonei (PMP) over a median follow-up of 51.2 months.
  • The study found that specific risk factors, like the tumor being less than 2 cm and confined to the right lower quadrant, increase the likelihood of recurrence, with a 5- and 10-year recurrence risk of 12% and 30%, respectively, for those with such factors.
  • Overall, appendectomy is generally sufficient for treating LAMNs, but long-term monitoring is recommended for high-risk patients, while those without risk factors can be monitored
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  • The Advocate-BREAST project aims to enhance the breast cancer patient experience through targeted education and patient-centered research.* -
  • A survey sent to nearly 7,000 breast cancer survivors revealed high satisfaction with care but identified significant concerns regarding symptoms and support, particularly around issues like sexual dysfunction and emotional health.* -
  • Patients expressed a need for better psychological support and clear educational resources, leading to proposed Quality Improvement projects focusing on holistic care and wellness programs.*
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Background: Ulcerative colitis, total colectomy, and tofacitinib have all been associated with an increased risk of venous thromboembolism.

Objective: To determine whether preoperative tofacitinib exposure increases venous thromboembolism or other postoperative complications among patients with ulcerative colitis undergoing subtotal colectomy, total colectomy, or total proctocolectomy.

Design: Retrospective, case-controlled study at a single institution.

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  • The study aimed to validate the Cleveland Clinic malignancy probability prediction model for incidental pulmonary nodules using data from two medical centers.
  • Researchers collected data from 296 patients over nearly a year, comparing predictions of malignant nodules against actual outcomes at various time points.
  • Results showed that the Cleveland Clinic model performed consistently well in predicting malignancy, suggesting it can effectively aid in clinical decision-making for patients with high-risk pulmonary nodules.
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  • - The study, Advocate-BREAST80+, assessed the needs of breast cancer patients aged 80 and older (P80+) compared to younger patients (P80-).
  • - A survey was conducted with 6,918 participants from the Mayo Clinic Breast Disease Registry, finding that P80+ were less likely to receive certain therapies and were significantly less satisfied with information about side effects and management.
  • - While P80+ reported lower anxiety levels, they were much less involved in clinical trials and showed little interest in participating in future studies, highlighting a need for improved education and support for this age group.
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  • - The study aimed to determine if exome sequencing could help efficiently identify individuals with hereditary breast and ovarian cancer (HBOC) and Lynch syndrome (LS), which are genetic conditions linked to increased cancer risk.
  • - Over 44,000 participants were recruited across diverse regions in the U.S., resulting in the identification of 550 carriers of HBOC and LS, with 52.1% being newly diagnosed and 39.2% not meeting current genetic evaluation criteria.
  • - The findings suggest a need for broader use of germline genetic screening to improve the screening and detection of those predisposed to these cancer syndromes, particularly among underrepresented populations.
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  • Virtual surgical planning for head and neck reconstruction is increasingly using 3D-printed patient-specific titanium implants (PSIs), sparking debate over their effectiveness compared to traditional stock reconstruction plates.
  • The study aimed to evaluate and compare the volumetric accuracy of PSIs versus stock plates in patients undergoing VSP-guided mandibular fibular free flap reconstructions at Mayo Clinic from 2016 to 2023.
  • Surgical accuracy was measured by comparing preoperative plans and postoperative results, with lower root mean square error (RMSE) values indicating higher accuracy, while various patient characteristics were also considered in the analysis.
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  • Hispanic White (HW) females have a lower overall incidence of breast cancer than non-Hispanic White (NHW) females, but their risk after benign breast disease (BBD) is uncertain.
  • A study in New Mexico analyzed characteristics of BBD and subsequent breast cancer risks in HW and NHW females, finding similar proportions in different types of BBD and elevated breast cancer risks for both groups.
  • The findings highlight that breast cancer risks are comparable for HW and NHW females, suggesting that HW females should receive appropriate clinical management based on their assessed risks.
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Purpose: The purpose of this study was to evaluate RB1 expression and survival across ovarian carcinoma histotypes and how co-occurrence of BRCA1 or BRCA2 (BRCA) alterations and RB1 loss influences survival in tubo-ovarian high-grade serous carcinoma (HGSC).

Experimental Design: RB1 protein expression was classified by immunohistochemistry in ovarian carcinomas of 7,436 patients from the Ovarian Tumor Tissue Analysis consortium. We examined RB1 expression and germline BRCA status in a subset of 1,134 HGSC, and related genotype to overall survival (OS), tumor-infiltrating CD8+ lymphocytes, and transcriptomic subtypes.

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  • The study aimed to analyze hospital and intensive care unit stays in patients undergoing a specific vascular repair procedure for aortic aneurysms, focusing on the impact of different cerebrospinal fluid drainage (CSFD) strategies.
  • A review of 412 patients treated between 2008 and 2023 was conducted, comparing those who received prophylactic CSFD before 2020 to those who received therapeutic CSFD after 2020.
  • Results indicated a significant reduction in hospital stay duration with therapeutic drainage while maintaining similar rates of major complications and mortality between the two groups.
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To identify credible causal risk variants (CCVs) associated with different histotypes of epithelial ovarian cancer (EOC), we performed genome-wide association analysis for 470,825 genotyped and 10,163,797 imputed SNPs in 25,981 EOC cases and 105,724 controls of European origin. We identified five histotype-specific EOC risk regions (p value <5 × 10) and confirmed previously reported associations for 27 risk regions. Conditional analyses identified an additional 11 signals independent of the primary signal at six risk regions (p value <10).

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