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1.
JAMA Surg ; 159(1): 7-8, 2024 Jan 01.
Artículo en Inglés | MEDLINE | ID: mdl-37792380

RESUMEN

This Viewpoint discusses mental health issues and suicide among surgeons in the US and potential solutions to this growing crisis.


Asunto(s)
Suicidio , Cirujanos , Humanos , Estados Unidos/epidemiología , Depresión/epidemiología , Recursos Humanos
2.
Ann Surg ; 279(3): 429-436, 2024 Mar 01.
Artículo en Inglés | MEDLINE | ID: mdl-37991182

RESUMEN

OBJECTIVE: To characterize the current state of mental health within the surgical workforce in the United States. BACKGROUND: Mental illness and suicide is a growing concern in the medical community; however, the current state is largely unknown. METHODS: Cross-sectional survey of the academic surgery community assessing mental health, medical error, and suicidal ideation. The odds of suicidal ideation adjusting for sex, prior mental health diagnosis, and validated scales screening for depression, anxiety, post-traumatic stress disorder (PTSD), and alcohol use disorder were assessed. RESULTS: Of 622 participating medical students, trainees, and surgeons (estimated response rate=11.4%-14.0%), 26.1% (141/539) reported a previous mental health diagnosis. In all, 15.9% (83/523) of respondents screened positive for current depression, 18.4% (98/533) for anxiety, 11.0% (56/510) for alcohol use disorder, and 17.3% (36/208) for PTSD. Medical error was associated with depression (30.7% vs. 13.3%, P <0.001), anxiety (31.6% vs. 16.2%, P =0.001), PTSD (12.8% vs. 5.6%, P =0.018), and hazardous alcohol consumption (18.7% vs. 9.7%, P =0.022). Overall, 13.2% (73/551) of respondents reported suicidal ideation in the past year and 9.6% (51/533) in the past 2 weeks. On adjusted analysis, a previous history of a mental health disorder (aOR: 1.97, 95% CI: 1.04-3.65, P =0.033) and screening positive for depression (aOR: 4.30, 95% CI: 2.21-8.29, P <0.001) or PTSD (aOR: 3.93, 95% CI: 1.61-9.44, P =0.002) were associated with increased odds of suicidal ideation over the past 12 months. CONCLUSIONS: Nearly 1 in 7 respondents reported suicidal ideation in the past year. Mental illness and suicidal ideation are significant problems among the surgical workforce in the United States.


Asunto(s)
Alcoholismo , Suicidio , Humanos , Estados Unidos/epidemiología , Salud Mental , Alcoholismo/epidemiología , Alcoholismo/psicología , Estudios Transversales , Factores de Riesgo , Ideación Suicida , Depresión/epidemiología , Depresión/psicología
3.
Surg Clin North Am ; 103(2): 271-285, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-36948718

RESUMEN

A cognitive bias describes "shortcuts" subconsciously applied to new scenarios to simplify decision-making. Unintentional introduction of cognitive bias in surgery may result in surgical diagnostic error that leads to delayed surgical care, unnecessary procedures, intraoperative complications, and delayed recognition of postoperative complications. Data suggest that surgical error secondary to the introduction of cognitive bias results in significant harm. Thus, debiasing is a growing area of research which urges practitioners to deliberately slow decision-making to reduce the effects of cognitive bias.


Asunto(s)
Cognición , Toma de Decisiones , Humanos , Errores Diagnósticos/psicología , Errores Médicos , Sesgo
5.
J Surg Res ; 283: 485-493, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-36436284

RESUMEN

INTRODUCTION: Rapid accumulation of data in surgical and medical oncology has changed the treatment landscape for patients with stage-III melanoma, introducing options for active surveillance and adjuvant systemic therapy; however, these options have increased the complexity of decision making. METHODS: We conducted an explanatory sequential mixed-methods study consisting of surveys and semistructured interviews among patients diagnosed with stage-III melanoma at a single institution from August 2019 to December 2021. The survey included the validated 30-point satisfaction with decision scale (SWD). The interview guide was developed using a shared decision-making framework. RESULTS: Twenty-six participants completed the survey (response rate 40%) and 17 were interviewed. In the survey, 69% of participants reported receiving a recommendation for active surveillance and 23% received a recommendation for adjuvant systemic therapy. Overall SWD for treatment of the lymph node basin and adjuvant systemic therapy was high at 27.94 and 26.21 out of 30, respectively. In the interviews, participants stressed the importance of the physician's recommendation as well as the desire to minimize intervention and avoid potential side effects in their decisions. However, they demonstrated persistent knowledge gaps in their understanding of the treatment options. CONCLUSIONS: Like other cancer types where the option for active surveillance exists, the physician's recommendation is influential in shaping decisions for patients with stage-III melanoma. Physicians can improve shared decision making in this complex treatment landscape through improved multidisciplinary collaboration and mechanisms for ensuring patients' understanding of the treatment options.


Asunto(s)
Melanoma , Prioridad del Paciente , Humanos , Satisfacción del Paciente , Melanoma/patología , Satisfacción Personal , Toma de Decisiones , Melanoma Cutáneo Maligno
6.
J Surg Res ; 284: 124-130, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-36566589

RESUMEN

INTRODUCTION: National guidelines recommend against routine axillary staging with sentinel lymph node biopsy (SLNB) and adjuvant radiotherapy (RT) in women ≥70 y with early-stage, hormone receptor-positive, HER2-negative breast cancer and clinically negative axilla; however, these practices remain common. METHODS: We conducted a prospective pilot study from August 2021 to 2022 using an intervention targeting breast surgeons and radiation oncologists in Michigan that aimed to reduce SLNB and RT in eligible patients. The intervention consisted of (1) a geriatric assessment, (2) an assessment of the patient's medical maximizing-minimizing preferences, and (3) a tailored script with counterpoints to reasons patients commonly seek SLNB or RT. At the end of the study period, participants completed a survey providing feedback with the primary outcomes being: acceptability, appropriateness, feasibility, and intention and motivation to use the materials based on validated measures. RESULTS: Participants (n = 23) included 15 breast surgeons and 8 radiation oncologists. Collectively, the materials were used with 115 patients. Considering all materials holistically, acceptability, appropriateness, and feasibility of the intervention were high; participants also intended and were motivated to use the intervention. Scores across all measures were highest for the geriatric assessment and lowest for the tailored script. The major barriers to using the intervention were limited time and instances of disagreement on treatment recommendations among surgeons and radiation oncologists. CONCLUSIONS: The omission of SLNB and adjuvant RT should be discussed in appropriately selected patients. A multifaceted provider-level deimplementation strategy may be an effective means for achieving this goal.


Asunto(s)
Neoplasias de la Mama , Humanos , Femenino , Anciano , Neoplasias de la Mama/patología , Estudios Prospectivos , Proyectos Piloto , Biopsia del Ganglio Linfático Centinela , Escisión del Ganglio Linfático , Axila/patología , Estadificación de Neoplasias
7.
Ann Surg Oncol ; 30(3): 1712-1720, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-36536198

RESUMEN

BACKGROUND: Same-day discharge after mastectomy without immediate reconstruction (MwoR) has been shown to be safe, with improved patient satisfaction when compared with patients discharged 1 or more days after surgery. Nevertheless, only 16% of patients undergoing MwoR in Michigan are discharged on the day of surgery, with significant variation between facilities (3-88%). Our objective was to explore determinants of same-day discharge and offer strategies for broader implementation of this practice. METHODS: We conducted semi-structured interviews with surgeons performing MwoR across the state of Michigan. Recruitment utilized purposeful and snowball sampling methods. The Tailored Implementation in Chronic Disease (TICD) framework was used to inform the creation of the interview guide. Interviews were transcribed and then analyzed using directed content analysis guided by the TICD framework. Salient determinants were organized into patient, provider, and system-level factors. RESULTS: Participants (n = 26) included general surgeons, breast surgeons, and surgical oncologists. Most surgeons (n = 18, 69%) reported that they discharged fewer than 60% of patients the same day after MwoR. The most common barriers included patient knowledge at the patient level; awareness of evidence, surgeon dogma, and peer influence at the provider level; and team processes and operating room logistics at the system level. CONCLUSION: We identified surgeon-defined determinants of same-day discharge after MwoR. For the identified barriers, potential implementation strategies could include incorporation of preoperative drain teachings for patients, utilizing consensus statements and opinion leaders to disseminate evidence supporting same-day mastectomies, and conducting workshops with relevant stakeholders to establish consistent facility practice patterns among surgical teams.


Asunto(s)
Neoplasias de la Mama , Cirujanos , Humanos , Femenino , Mastectomía/métodos , Neoplasias de la Mama/cirugía , Cuidados Preoperatorios , Michigan
8.
Ann Surg ; 277(5): e1106-e1115, 2023 05 01.
Artículo en Inglés | MEDLINE | ID: mdl-35129464

RESUMEN

OBJECTIVE: The aim of this study was to determine overall trends and center-level variation in utilization of completion lymph node dissection (CLND) and adjuvant systemic therapy for sentinel lymph node (SLN)-positive melanoma. SUMMARY BACKGROUND DATA: Based on recent clinical trials, management options for SLN-positive melanoma now include effective adjuvant systemic therapy and nodal observation instead of CLND. It is unknown how these findings have shaped practice or how these contemporaneous developments have influenced their respective utilization. METHODS: We performed an international cohort study at 21 melanoma referral centers in Australia, Europe, and the United States that treated adults with SLN-positive melanoma and negative distant staging from July 2017 to June 2019. We used generalized linear and multinomial logistic regression models with random intercepts for each center to assess center-level variation in CLND and adjuvant systemic treatment, adjusting for patient and disease-specific characteristics. RESULTS: Among 1109 patients, performance of CLND decreased from 28% to 8% and adjuvant systemic therapy use increased from 29 to 60%. For both CLND and adjuvant systemic treatment, the most influential factors were nodal tumor size, stage, and location of treating center. There was notable variation among treating centers in management of stage IIIA patients and use of CLND with adjuvant systemic therapy versus nodal observation alone for similar risk patients. CONCLUSIONS: There has been an overall decline in CLND and simultaneous adoption of adjuvant systemic therapy for patients with SLN-positive melanoma though wide variation in practice remains. Accounting for differences in patient mix, location of care contributed significantly to the observed variation.


Asunto(s)
Melanoma , Ganglio Linfático Centinela , Neoplasias Cutáneas , Adulto , Humanos , Ganglio Linfático Centinela/cirugía , Ganglio Linfático Centinela/patología , Neoplasias Cutáneas/cirugía , Biopsia del Ganglio Linfático Centinela , Estudios de Cohortes , Melanoma/cirugía , Melanoma/tratamiento farmacológico , Escisión del Ganglio Linfático , Estudios Retrospectivos
9.
J Surg Oncol ; 127(1): 18-27, 2023 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-36069388

RESUMEN

BACKGROUND: Sentinel node biopsy (SLNB) is not routinely recommended for patients undergoing prophylactic mastectomy (PM), yet omission remains a subject of debate among surgeons. A modern patient cohort was examined to determine occult malignancy (OM) incidence within PM specimens to reinforce current recommendations. METHODS: All PM performed over a 5-year period were retrospectively identified, including women with unilateral breast cancer who underwent synchronous or delayed contralateral PM or women with elevated cancer risk who underwent bilateral PM. RESULTS: The study population included 772 patients (598 CPM, 174 BPM) with a total of 39 OM identified: 17 invasive cancers (14 CPM, 3 BPM) and 22 DCIS (19 CPM, 3 BPM). Of the 86 patients for whom SLNB was selectively performed, 1 micrometastasis was identified. In the CPM cohort, risk of OM increased with age, presence of LCIS of either breast, or presence of a non-BRCA high-penetrance gene mutation, while preoperative magnetic resonance imaging was associated with lower likelihood of OM. CONCLUSIONS: Given the low incidence of invasive OM in this updated series, routine SLNB is of low value for patients undergoing PM. For patients with indeterminate radiographic findings, discordant preoperative biopsies, LCIS, or non-BRCA high-penetrance gene mutations, selective SLNB implementation could be considered.


Asunto(s)
Neoplasias de la Mama , Neoplasias Primarias Desconocidas , Mastectomía Profiláctica , Humanos , Femenino , Mastectomía , Estudios Retrospectivos , Neoplasias de la Mama/diagnóstico por imagen , Neoplasias de la Mama/genética , Neoplasias de la Mama/prevención & control , Biopsia del Ganglio Linfático Centinela , Neoplasias Primarias Desconocidas/diagnóstico por imagen , Neoplasias Primarias Desconocidas/cirugía
10.
Am J Surg ; 225(2): 335-340, 2023 02.
Artículo en Inglés | MEDLINE | ID: mdl-36180302

RESUMEN

BACKGROUND: Data suggest variation in utilization of completion lymph node dissection (CLND) and adjuvant systemic therapy (AT) for sentinel lymph node-positive melanoma. We aimed to explore how clinicians consider multidisciplinary treatment options. METHODS: We conducted semi-structured interviews of surgical oncologists, medical oncologists, and otolaryngologists to produce a thematic analysis. RESULTS: Participants (n = 26) described melanoma care as inherently "multidisciplinary," noting the importance of conversations facilitated by shared clinic days or space. Despite believing that their practice mirrored other clinicians, participants revealed diverging perspectives on CLND and AT. Multidisciplinary care presented challenges for surveillance as surgeons expressed desire to retain ownership of patients but did not feel comfortable overseeing AT needs. Participants questioned the fidelity of nodal ultrasounds, noted redundancy in their roles, and described a "surveillance burden" for patients. CONCLUSION: Opportunities exist to improve multidisciplinary melanoma care through broader consensus of how to translate emerging data into patient care and delineating surveillance roles.


Asunto(s)
Melanoma , Ganglio Linfático Centinela , Neoplasias Cutáneas , Humanos , Neoplasias Cutáneas/cirugía , Neoplasias Cutáneas/patología , Biopsia del Ganglio Linfático Centinela , Melanoma/cirugía , Melanoma/patología , Escisión del Ganglio Linfático , Ganglio Linfático Centinela/patología
12.
Ann Surg Oncol ; 2022 Apr 05.
Artículo en Inglés | MEDLINE | ID: mdl-35380309

RESUMEN

BACKGROUND: Since 2004, national guidelines have supported the omission of sentinel lymph node biopsy (SLNB) and radiotherapy for women ≥ 70 years of age with early-stage, hormone receptor-positive (HR+) breast cancer, but many women continue to receive at least one of these services. Provider- and patient-level factors may contribute to persistent utilization, but the role of facility-level factors is unknown. We aimed to determine facility-level variation of SLNB and adjuvant radiotherapy utilization in older women with early-stage, HR+ breast cancer undergoing breast-conserving surgery (BCS). Additionally, we aimed to explore factors associated with SLNB and radiotherapy utilization and the intra-facility correlation in their utilization. METHODS: We conducted a retrospective cohort study using a statewide registry of claims data. We included women ≥70 years of age diagnosed with breast cancer who underwent BCS from 2012 to 2019 at 80 hospitals in the Michigan Value Collaborative. The main outcome was inter-facility rates and variation of SLNB and radiotherapy, as well as intra-facility correlation in their utilization. RESULTS: The cohort included 7253 women (median age 77 years). Only 20% (n = 1440) underwent BCS alone, whereas 71% (n = 5122) underwent SLNB and 52% (n = 3793) received radiotherapy. Inter-facility rates of SLNB ranged from 35 to 82% (median 70%), and radiotherapy ranged from 19 to 72% (median 49%). SLNB and radiotherapy were positively correlated (r = 0.27, p = 0.016). CONCLUSIONS: SLNB and radiotherapy rates remain high with significant variation in utilization at the facility level. High utilizers of SLNB are likely to be high utilizers of radiotherapy, suggesting the opportunity for strategic targeting of these facilities and their clinicians.

14.
J Am Coll Surg ; 234(1): 14-23, 2022 01 01.
Artículo en Inglés | MEDLINE | ID: mdl-35213456

RESUMEN

BACKGROUND: Centralizing complex cancer operations, such as pancreatectomy and esophagectomy, has been shown to increase value, largely due to reduction in complications. For high-volume operations with low complication rates, it is unknown to what degree value varies between facilities, or by what mechanism value may be improved. To identify possible opportunities for value enhancement for such operations, we sought to describe variations in episode spending for mastectomy with a secondary aim of identifying patient- and facility-level determinants of variation. STUDY DESIGN: Using the Michigan Value Collaborative risk-adjusted, price-standardized claims data, we evaluated mean spending for patients undergoing mastectomy at 74 facilities (n = 7,342 patients) across the state of Michigan. Primary outcomes were 30- and 90-day episode spending. Using linear mixed models, facility- and patient-level factors were explored for association with spending variability. RESULTS: Among 7,342 women treated across 74 facilities, mean 30-day spending by facility ranged from $11,129 to $20,830 (median $14,935). Ninety-day spending ranged from $17,303 to $31,060 (median $23,744). Patient-level factors associated with greater spending included simultaneous breast reconstruction, bilateral surgery, length of stay, and readmission. Among women not undergoing reconstruction, variation persisted, and length of stay, bilateral surgery, and readmission were all associated with increased spending. CONCLUSION: Michigan hospitals have significant variation in spending for mastectomy. Reducing length of stay through wider adoption of same-day discharge for mastectomy and reducing the frequency of bilateral surgery may represent opportunities to increase value, without compromising patient safety or oncologic outcomes.


Asunto(s)
Neoplasias de la Mama , Mastectomía , Neoplasias de la Mama/cirugía , Esofagectomía , Femenino , Hospitales , Humanos , Masculino , Pancreatectomía
15.
Ann Surg Oncol ; 29(2): 1051-1059, 2022 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-34554342

RESUMEN

BACKGROUND: In most women ≥ 70 years old with hormone-receptor-positive breast cancer, axillary staging and adjuvant radiotherapy provide no survival advantage over surgery and hormone therapy alone. Despite recommendations for their omission, sentinel lymph node biopsy (SLNB) and adjuvant radiotherapy rates remain high. While treatment side effects are well documented, less is known about the incremental spending associated with SLNB and adjuvant radiotherapy. METHODS: Using a statewide multipayer claims registry, we examined spending associated with breast cancer treatment in a retrospective cohort of women ≥ 70 years old undergoing surgery. RESULTS: 9074 women ≥70 years old underwent breast cancer resection between 2012 and 2019, with 78% (n = 7122) receiving SLNB and/or adjuvant radiotherapy within 90 days of surgery. Women undergoing SLNB were more likely to receive radiation (51% vs. 28%; p < 0.001 and OR = 2.68). Average 90-day spending varied substantially based upon treatment received, ranging from US$10,367 (breast-conserving surgery alone) to US$27,370 (mastectomy with SLNB and adjuvant radiotherapy). The relative increases in 90-day treatment spending in the breast-conserving surgery cohort was 65% for SLNB, 82% for adjuvant radiotherapy, and 120% for both treatments. CONCLUSIONS: SLNB and adjuvant radiotherapy have significant spending implications in older women with breast cancer, even though they are unlikely to improve survival.


Asunto(s)
Neoplasias de la Mama , Anciano , Axila/patología , Neoplasias de la Mama/cirugía , Femenino , Humanos , Escisión del Ganglio Linfático , Mastectomía , Estadificación de Neoplasias , Estudios Retrospectivos , Biopsia del Ganglio Linfático Centinela
17.
J Surg Res ; 270: 503-512, 2022 02.
Artículo en Inglés | MEDLINE | ID: mdl-34801801

RESUMEN

BACKGROUND: National recommendations allow for the omission of sentinel lymph node biopsy (SLNB) and post-lumpectomy radiotherapy in women ≥ 70 y/o with early-stage, hormone-receptor positive invasive breast cancer, but these therapies remain common. Previous work demonstrates an individual's maximizing-minimizing trait-an inherent preference for more or less medical care-may influence the preference for low-value care. MATERIALS AND METHODS: We recruited an equal number of women ≥ 70 yrs who were maximizers, minimizers, or neutral based on a validated measure between September 2020 and November 2020. Participants were presented a hypothetical breast cancer diagnosis before randomization to one of three follow-up messages: maximizer-tailored, minimizer-tailored, or neutral. Tailored messaging aimed to redirect maximizers and minimizers toward declining SLNB and radiotherapy. The main outcome measure was predicted probability of choosing SLNB or radiotherapy. RESULTS: The final analytical sample (n = 1600) was 515 maximizers (32%), 535 neutral (33%) and 550 (34%) minimizers. Higher maximizing tendency positively correlated with electing both SLNB and radiotherapy on logistic regression (P < 0.01). Any tailoring (maximizer- or minimizer-tailored) reduced preference for SLNB in maximizing and neutral women but had no effect in minimizing women. Tailoring had no impact on radiotherapy decision, except for an increased probability of minimizers electing radiotherapy when presented with maximizer-tailored messaging. CONCLUSIONS: Maximizing-minimizing tendencies are associated with treatment preferences among women facing a hypothetical breast cancer diagnosis. Targeted messaging may facilitate avoidance of low-value breast cancer care, particularly for SLNB.


Asunto(s)
Neoplasias de la Mama , Anciano , Axila/patología , Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/patología , Neoplasias de la Mama/terapia , Femenino , Humanos , Escisión del Ganglio Linfático , Mastectomía Segmentaria , Evaluación de Resultado en la Atención de Salud , Biopsia del Ganglio Linfático Centinela
18.
Am Surg ; 87(11): 1752-1759, 2021 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-34758653

RESUMEN

BACKGROUND: Well-differentiated liposarcoma (WDLPS) is a low-grade soft tissue sarcoma with a propensity for local recurrence. The necessity of obtaining microscopically free surgical margins (R0) to minimize local recurrence is not clear. This study evaluates recurrence-free survival (RFS) of extremity WDLPS in relation to resection margin status. METHODS: A retrospective review of adult patients with primary extremity WDLPS at seven US institutions from 2000 to 2016 was performed. Patients with recurrent tumors or incomplete resection (R2) were excluded. Clinicopathologic factors were analyzed to assess impact on local RFS. RESULTS: 97 patients with primary extremity WDLPS were identified. The majority of patients had deep, lower extremity tumors. Mean tumor size was 18.2±8.9cm. Patients were treated with either radical (76.3%) or excisional (23.7%) resections; 64% had R0 and 36% had microscopically positive (R1) resection margins. Ten patients received radiation therapy with no difference in receipt of radiation between R0 vs R1 groups. Thirteen patients (13%) developed a local recurrence with no difference in RFS between R0 vs R1 resection. Five-year RFS was 59.5% for R0 vs 85.2% for R1. Only one patient died of disease after developing dedifferentiation and distant metastasis despite originally having an R0 resection. DISCUSSION: In this large multi-institutional study of surgical resection of extremity WDLPS, microscopically positive margins were not associated with an increased risk of recurrence. Positive microscopic margin resection for extremity WDLPS may yield similar rates of local control while avoiding a radical approach to obtain microscopically negative margins.


Asunto(s)
Brazo , Pierna , Liposarcoma/cirugía , Recurrencia Local de Neoplasia/epidemiología , Neoplasias de los Tejidos Blandos/cirugía , Adulto , Anciano , Anciano de 80 o más Años , Brazo/cirugía , Supervivencia sin Enfermedad , Femenino , Humanos , Pierna/cirugía , Liposarcoma/mortalidad , Masculino , Márgenes de Escisión , Persona de Mediana Edad , Recurrencia Local de Neoplasia/mortalidad , Estudios Retrospectivos , Factores de Riesgo , Neoplasias de los Tejidos Blandos/mortalidad
20.
Clin Cancer Res ; 27(9): 2494-2504, 2021 05 01.
Artículo en Inglés | MEDLINE | ID: mdl-33547200

RESUMEN

PURPOSE: Merkel cell carcinoma (MCC) is an aggressive cutaneous neuroendocrine carcinoma that can be divided into two classes: virus-positive (VP) MCC, associated with oncogenic Merkel cell polyomavirus (MCPyV); and virus-negative (VN) MCC, associated with photodamage. EXPERIMENTAL DESIGN: We classified 346 MCC tumors from 300 patients for MCPyV using a combination of IHC, ISH, and qPCR assays. In a subset of tumors, we profiled mutation status and expression of cancer-relevant genes. MCPyV and molecular profiling results were correlated with disease-specific outcomes. Potential prognostic biomarkers were further validated by IHC. RESULTS: A total of 177 tumors were classified as VP-MCC, 151 tumors were VN-MCC, and 17 tumors were indeterminate. MCPyV positivity in primary tumors was associated with longer disease-specific and recurrence-free survival in univariate analysis, and in multivariate analysis incorporating age, sex, immune status, and stage at presentation. Prioritized oncogene or tumor suppressor mutations were frequent in VN-MCC but rare in VP-MCC. TP53 mutation developed with recurrence in one VP-MCC case. Importantly, for the first time we find that VP-MCC and VN-MCC display distinct sets of prognostic molecular biomarkers. For VP-MCC, shorter survival was associated with decreased expression of immune markers including granzyme and IDO1. For VN-MCC, shorter survival correlated with high expression of several genes including UBE2C. CONCLUSIONS: MCPyV status is an independent prognostic factor for MCC. Features of the tumor genome, transcriptome, and microenvironment may modify prognosis in a manner specific to viral status. MCPyV status has clinicopathologic significance and allows for identification of additional prognostic subgroups.


Asunto(s)
Biomarcadores de Tumor , Carcinoma de Células de Merkel/etiología , Carcinoma de Células de Merkel/mortalidad , Poliomavirus de Células de Merkel , Infecciones por Polyomavirus/complicaciones , Infecciones por Polyomavirus/virología , Anciano , Anciano de 80 o más Años , Carcinoma de Células de Merkel/diagnóstico , Transformación Celular Viral , Variaciones en el Número de Copia de ADN , Susceptibilidad a Enfermedades , Femenino , Perfilación de la Expresión Génica , Secuenciación de Nucleótidos de Alto Rendimiento , Humanos , Inmunohistoquímica , Estimación de Kaplan-Meier , Masculino , Persona de Mediana Edad , Mutación , Estadificación de Neoplasias , Oncogenes , Pronóstico , Microambiente Tumoral
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