Publications by authors named "Nadeem Abu Rustum"

Fertility-sparing treatment (FST) has become a key aspect of managing gynecologic cancers in reproductive-age patients who wish to preserve fertility. Several leading clinical societies, including the European Society of Gynecological Oncology, the European Society for Radiotherapy and Oncology, the European Society of Pathology, and the European Society of Human Reproduction and Embryology, have recently published evidence-based guidelines on fertility-sparing strategies and posttreatment surveillance of patients with early-stage gynecologic cancers, in particular endometrial and cervical cancers. These guidelines highlight MRI as essential to initial patient selection and follow-up.

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Purpose: Although germline genetic testing (GT) is recommended for all patients with ovarian cancer (OC) and some patients with endometrial cancer (EC), uptake remains low with multiple barriers. Our center performs GT in parallel with somatic testing via a targeted sequencing assay (MSK-IMPACT) and initiates testing in oncology clinics (mainstreaming). We sought to optimize our GT processes for OC/EC.

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Objectives: To describe clinical outcomes and pearls for patients with gestational trophoblastic neoplasm (GTN).

Methods: Patients with GTN treated at a referral center from 1/2006 to 12/2022 were included. Clinical characteristics, World Health Organization risk score (low-risk 0-6, high-risk ≥7), and treatments/outcomes were evaluated using summary statistics, stratified by initial treatment at a referral center versus locally.

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Objective: To characterize the genomic landscape of FIGO 2009 stage IA, non-myometrial invasive endometrioid endometrial cancers (ECs) of no specific molecular profile (NSMP) and define the earliest driver genetic alterations and subsequent tumor evolution.

Methods: Early-stage (FIGO 2009 stage IA), non-myoinvasive endometrioid NSMP ECs subjected to clinical tumor-normal targeted sequencing between 2014 and 2022 were identified. ECs were dichotomized into low- and high-volume disease based on gross and histologic measurement using a cutoff of 1.

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Article Synopsis
  • The study aimed to assess how urinary diversion methods during pelvic exenteration affect the quality of life for patients with recurrent gynecologic cancers.
  • A retrospective analysis was conducted using validated questionnaires to measure participants’ health and functioning, dividing them into two groups based on urinary diversion type: continent (CD) and noncontinent (NCD).
  • Results showed improvements in overall health and physical functioning over time, with CD patients reporting better social functioning and body image, but both groups ultimately returned to their baseline quality of life within a year after surgery.
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Objective: To examine the risk of sentinel lymph node (SLN) metastases in apparent uterine-confined endometrial cancer (EC) using molecular classification with clinicopathologic features and assess oncologic outcomes by molecular subtypes with micro- or macro-metastases in SLN.

Methods: Patients undergoing surgical staging for presumed uterine-confined EC of any histology, with successful bilateral SLN mapping were included. Primary tumors were assigned molecular subtypes using a published algorithm.

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Article Synopsis
  • This study looked at two types of surgeries for a kind of cancer called high-grade uterine adenocarcinoma to see which was better: robot-assisted laparoscopy (RA) or traditional laparoscopy (LSC).
  • Out of 901 patients, most had RA surgery, but both methods had similar rates of complications and how long patients lived after the surgery.
  • The results showed that RA surgery was just as effective as LSC in treating this cancer, with no extra risks for patients who had robot-assisted surgery.
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Objective: Endometrial carcinoma (EC) has different molecular subtypes associated with varied prognosis. We sought to characterize the molecular features of ECs with POLE hotspot mutations and concurrent mismatch repair (MMR) deficiency/high microsatellite instability (MSI).

Methods: We identified POLE-mutated (POLEmut), MMR-deficient (MMRd)/MSI-high (MSI-H), or combined POLEmut/MMRd ECs subjected to clinical tumor-normal panel sequencing between 2014 and 2023.

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Aim: The aim of this study was to assess whether the use of sentinel lymph node (SLN) in addition to lymphadenectomy was associated with survival benefit in patients with early-stage cervical cancer.

Methods: International, multicenter, retrospective study.

Inclusion Criteria: cervical cancer treated between 01/2007 and 12/2016 by surgery only; squamous cell carcinoma, adenocarcinoma, adenosquamous carcinoma, FIGO 2009 stage IB1-IIA2, negative surgical margins, and laparotomy approach.

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Objectives: To determine the impact of adjuvant therapy on oncologic outcomes in patients with 2009 International Federation of Gynecology and Obstetrics (FIGO) stage IA, IB, or II endometrial clear cell carcinoma (ECCC).

Methods: We conducted a retrospective review at 4 international institutions. Patients with newly diagnosed clinical stage I or II disease of either clear cell or mixed histology with a clear cell component treated between 01/01/2000-12/31/2015 were included.

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Drug resistance is the major cause of therapeutic failure in high-grade serous ovarian cancer (HGSOC). Yet, the mechanisms by which tumors evolve to drug resistant states remains largely unknown. To address this, we aimed to exploit clone-specific genomic structural variations by combining scaled single-cell whole genome sequencing with longitudinally collected cell-free DNA (cfDNA), enabling clonal tracking before, during and after treatment.

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Article Synopsis
  • - The European Society of Gynaecological Oncology, alongside other societies, created evidence-based guidelines for fertility-sparing strategies in patients with cervical and ovarian cancers, as well as borderline ovarian tumors.
  • - These guidelines were developed through a thorough literature review and involved a diverse group of 25 experts in multiple medical fields, ensuring a comprehensive approach.
  • - Prior to release, the guidelines were vetted by 121 independent cancer care professionals and patient representatives, addressing key aspects of initial management, fertility optimization, and future pregnancy desires.
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After the publication of the Laparoscopic Approach to Cervical Cancer (LACC) trial, open surgery has become the standard approach for radical hysterectomy in early stage cervical cancer. Recent studies assessed the role of a non-radical approach in low risk cervical cancer and showed no survival difference compared with radical hysterectomy. However, there is a gap in knowledge regarding the oncologic outcomes of minimally invasive simple hysterectomy in low risk cervical cancer.

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Background: The 2023 International Federation of Gynecology and Obstetrics (FIGO) staging system includes lymphovascular invasion quantification as a staging criterion for endometrioid endometrial carcinomas; no lymphovascular invasion and focal invasion (≤4 vessels involved) are grouped as one category, and substantial invasion as another.

Objective: To assess the association between lymphovascular invasion and oncologic outcomes.

Methods: We retrospectively identified patients with FIGO 2009 stage I endometrioid endometrial cancer treated surgically with total hysterectomy and lymph node assessment at two tertiary care centers between January 1, 2012, and December 31, 2019.

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Objective: To assess clinicopathologic features and survival outcomes of patients with endometrial carcinoma involving adnexal, full-thickness serosal, or combined involvement.

Methods: This international, multi-institutional, retrospective study examined patients with 2009 International Federation of Gynecology and Obstetrics (FIGO) stage IIIA endometrial cancer and tumors involving the uterine serosa and/or adnexa, who were surgically staged between 2000 and 2019. Patients with sarcoma histology, concurrent endometrial/ovarian malignancy, neoadjuvant treatment, positive lymph nodes, or peritoneal disease were excluded.

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Whole-genome doubling (WGD) is a critical driver of tumor development and is linked to drug resistance and metastasis in solid malignancies. Here, we demonstrate that WGD is an ongoing mutational process in tumor evolution. Using single-cell whole-genome sequencing, we measured and modeled how WGD events are distributed across cellular populations within tumors and associated WGD dynamics with properties of genome diversification and phenotypic consequences of innate immunity.

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Article Synopsis
  • The study compared the performance of the chatbot ChatGPT (GPT-4) to the National Comprehensive Cancer Network (NCCN) Guidelines in managing ovarian cancer by evaluating 10 key questions.
  • ChatGPT, both unprompted and prompted, was found to have a higher accuracy and completeness in its responses compared to NCCN for sections like risk factors and surgical management, but it lagged in medical management.
  • Despite GPT-4's promising performance, the presence of inaccuracies indicates that unsupervised use of chatbots for medical guidance should be approached with caution.
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Anti-HER2 therapy is indicated for erb-b2 receptor tyrosine kinase 2 (ERBB2)-amplified/overexpressing endometrial carcinoma (EC). Mutations constitute another mode of ERBB2 activation, but only rare ERBB2-mutated ECs have been reported. We sought to characterize the clinicopathologic and genetic features of ERBB2-mutated EC.

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Objectives: To develop a pre-operative tool to estimate the risk of peri-operative packed red blood cell transfusion in primary debulking surgery.

Methods: We retrospectively reviewed an institutional database to identify patients who underwent primary debulking surgery for ovarian cancer at a single center between January 1, 2001 and May 31, 2019. Receiver operating characteristic curve and area under the receiver operating characteristic curve (AUC) were calculated.

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Article Synopsis
  • Androgen receptor splicing variant 7 (AR-V7) is a shortened version of AR mRNA that could serve as a biomarker for therapies targeting AR in various cancers.
  • This study identifies two gynecologic cancers in the lower uterine segment and ovary, both of which were found to harbor AR-V7 through targeted RNA sequencing.
  • The findings suggest that AR-V7 may play a role in unusual gynecologic tumors with specific histological features, showing similarities to AR-V7-positive breast cancers rather than prostate cancers.
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Objective: We assessed the prognosis and molecular subtypes of early stage endometrioid endometrial cancer with isolated tumor cells within sentinel lymph nodes (SLNs) compared with node negative disease.

Methods: Patients diagnosed with stage IA, IB, or II endometrioid endometrial cancer and primary surgical management were identified from January 1, 2007 to December 31, 2019. All SLNs underwent ultrastaging according to the institutional protocol.

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•Both primary endometrial cancers (ECs) and matched lung metastases shared a common ancestor with independent evolution at each site.•The two endometrioid ECs studied acquired additional mutations during the distant metastatic process.•Subclonal hotspot mutations in the two primary ECs studied became clonal in the distant metastases.

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Background: Ovarian cancer with extensive metastatic disease involving pelvic structures often requires rectosigmoid resection for complete gross resection; however, it is associated with increased surgical morbidity. There are limited data, and none in ovarian cancer, on near-infrared assessment of perfusion in rectosigmoid resections with anastomosis.

Primary Objective: To compare the rate of pelvic complications (pelvic abscesses, anastomotic leaks, and infections) within 30 days of surgery with and without near-infrared assessment of perfusion at time of rectosigmoid resection and re-anastomosis in patients undergoing cytoreductive surgery for ovarian cancer.

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Objectives: To investigate the association of molecular and pathologic factors with concurrent or recurrent ovarian disease to guide ovarian preservation in endometrioid endometrial cancer.

Methods: Patients with endometrial cancer ≤50 years of age at diagnosis were grouped by elective oophorectomy versus ovarian preservation at staging (January 2010 to June 2021). Tumors were stratified by molecular sub-type and mutational status with next generation sequencing and immunohistochemistry.

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Article Synopsis
  • Vulvar cancer is diagnosed in about 6,470 individuals each year, primarily as squamous cell carcinomas, constituting 5% to 8% of gynecologic cancers.
  • Key risk factors include older age, HPV infection, smoking, inflammatory vulvar conditions, and weakened immune systems.
  • The text reviews NCCN Clinical Practice Guidelines for treatments, surveillance, systemic therapies, and survivorship for those affected by vulvar cancer.
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