8 results on '"Obeid EI"'
Search Results
2. Genetic Contribution to Metastatic Prostate Cancer.
- Author
-
Sokolova AO, Obeid EI, and Cheng HH
- Subjects
- Antineoplastic Agents therapeutic use, DNA Damage, Genetic Predisposition to Disease, Genetic Testing, Germ-Line Mutation, Humans, Indoles therapeutic use, Male, Neoplasm Metastasis drug therapy, Phthalazines therapeutic use, Piperazines therapeutic use, Prostatic Neoplasms drug therapy, Neoplasm Metastasis genetics, Neoplasm Metastasis pathology, Prostatic Neoplasms genetics, Prostatic Neoplasms pathology
- Abstract
Recent studies show that the prevalence of germline pathogenic and likely pathogenic variants (also known as mutations) in DNA repair genes in metastatic prostate cancer is higher than previously recognized and higher than in unaffected men. Specific gene dysfunction is important in prostate cancer initiation and/or evolution to metastases. This article reviews key literature on individual genes, recognizing BRCA2 as the gene most commonly altered in the metastatic setting. This article discusses the importance of representative and diverse inclusion, and efforts to advance management for at-risk carrier populations to maximize clinical benefit., Competing Interests: Disclosure A.O. Sokolova receives research funding from NIH/NCIT32CA009515. E.I. Obeid receives research funding from the American Cancer Society, Eileen Jacoby Foundation, Genetech, Merck, NCCN Foundation Young Investigator Award, and Newtown Foundation; and has a consultancy or advisory role to Daiichi Sankyo, Ethos Immunomedics, Foundation Medicine, Incyte, Novartis, OncLive, Pfizer, and Puma. H.H. Cheng receives research funding from the PNW SPORE CA097186, Prostate Cancer Foundation, NIH/NCI P30 CA015704, DOD W81XWH-17-2-0043; receives research funding to institution from Clovis Oncology, Club Foundation, Janssen, Medivation and Sanofi; has a consultancy role to AstraZeneca; and receives royalties from UpToDate. The authors have nothing else to disclose, (Copyright © 2021 Elsevier Inc. All rights reserved.)
- Published
- 2021
- Full Text
- View/download PDF
3. Treatment times in breast cancer patients receiving neoadjuvant vs adjuvant chemotherapy: Is efficiency a benefit of preoperative chemotherapy?
- Author
-
Melchior NM, Sachs DB, Gauvin G, Chang C, Wang CE, Sigurdson ER, Daly JM, Aggon AA, Hayes SB, Obeid EI, and Bleicher RJ
- Subjects
- Breast Neoplasms drug therapy, Breast Neoplasms pathology, Female, Follow-Up Studies, Humans, Middle Aged, Prognosis, Survival Rate, Antineoplastic Combined Chemotherapy Protocols therapeutic use, Breast Neoplasms mortality, Chemotherapy, Adjuvant mortality, Neoadjuvant Therapy mortality, Preoperative Care
- Abstract
Background/objective: Delays in times to surgery, chemotherapy, and radiotherapy impair survival in breast cancer patients. Neoadjuvant chemotherapy (NAC) confers equivalent survival to adjuvant chemotherapy (AC), but it remains unknown which approach facilitates faster initiation and completion of treatment., Methods: Women ≥18 years old with nonrecurrent, noninflammatory, clinical stage I-III breast cancer diagnosed between 2004 and 2015 who underwent both surgery and chemotherapy were reviewed from the National Cancer Database., Results: Among 155 606 women overall, 28 241 patients received NAC and 127 365 patients received AC. NAC patients had higher clinical T and N stages (35.8% T3/4 vs 4.9% T3/4; 14.4% N2/3 vs 3.7% N2/3). After adjusting for stage and other factors, NAC patients had longer times to begin treatment (36.1 vs 35.4 days adjusted, P = .15), and took significantly longer to start radiotherapy (240.8 vs 218.2 days adjusted, P < .0001), and endocrine therapy (301.6 vs 275.7 days adjusted, P < .0001). Unplanned readmissions (1.2% vs 1.7%), 30-day mortality (0.04% vs 0.01%), and 90-day mortality (0.30% vs 0.08%) were all low and clinically insignificant between NAC and AC., Conclusion: Compared to patients receiving AC, those receiving NAC do not start treatment sooner. In addition, patients receiving NAC do not complete treatment faster. Although there are clear indications for administering NAC vs AC, rapidity of treatment should not be considered a benefit of giving chemotherapy preoperatively., (© 2020 The Authors. Cancer Medicine published by John Wiley & Sons Ltd.)
- Published
- 2020
- Full Text
- View/download PDF
4. Multigene Panel Testing and Breast Cancer Risk: Is It Time to Scale Down?
- Author
-
Obeid EI, Hall MJ, and Daly MB
- Subjects
- Breast, Genetic Testing, Humans, Breast Neoplasms genetics
- Published
- 2017
- Full Text
- View/download PDF
5. Genetic testing for hereditary cancer predisposition: BRCA1/2, Lynch syndrome, and beyond.
- Author
-
Hall MJ, Obeid EI, Schwartz SC, Mantia-Smaldone G, Forman AD, and Daly MB
- Subjects
- Adult, Chemoprevention, Early Detection of Cancer, Female, Fertility Preservation, Genetic Predisposition to Disease, Genital Neoplasms, Female diagnosis, Genital Neoplasms, Female prevention & control, Humans, Middle Aged, Mutation, Penetrance, Prophylactic Surgical Procedures, Reproductive Health, Risk Assessment, Breast Neoplasms genetics, Colorectal Neoplasms, Hereditary Nonpolyposis diagnosis, Colorectal Neoplasms, Hereditary Nonpolyposis genetics, Genes, BRCA1, Genes, BRCA2, Genetic Testing, Genital Neoplasms, Female genetics
- Abstract
Obstetrician/gynecologists and gynecologic oncologists serve an integral role in the care of women at increased hereditary risk of cancer. Their contribution includes initial identification of high risk patients, screening procedures like bimanual exam, trans-vaginal ultrasound and endometrial biopsy, prophylaxis via TAH and/or BSO, and chemoprevention. Further, gynecologists also serve a central role in the management of the secondary repercussions of efforts to mitigate increased cancer risks, including vasomotor symptoms, sexual function, bone health, cardiovascular disease, and mental health. The past several years has seen multiple new high and moderate penetrance genes introduced into the clinical care of women at increased risk of gynecologic malignancy. Awareness of these new genes and the availability of new multi-gene panel tests is critical for providers on the front-line of women's health., (Copyright © 2016 Elsevier Inc. All rights reserved.)
- Published
- 2016
- Full Text
- View/download PDF
6. Comparison of Adjuvant Radiation Therapy Alone Versus Radiation Therapy and Endocrine Therapy in Elderly Women With Early-Stage, Hormone Receptor-Positive Breast Cancer Treated With Breast-Conserving Surgery.
- Author
-
Murphy CT, Li T, Wang LS, Obeid EI, Bleicher RJ, Eastwick G, Johnson ME, Hayes SB, Weiss SE, and Anderson PR
- Subjects
- Aged, Breast Neoplasms surgery, Combined Modality Therapy, Disease-Free Survival, Female, Follow-Up Studies, Humans, Neoplasm Staging, Survival Analysis, Treatment Outcome, Antineoplastic Agents, Hormonal administration & dosage, Breast Neoplasms drug therapy, Breast Neoplasms radiotherapy, Radiotherapy, Adjuvant methods, Tamoxifen administration & dosage
- Abstract
Background: Randomized data examining adjuvant radiation therapy (RT) alone in elderly women with low-risk, hormone receptor-positive (HR(+)) breast cancer is lacking. We investigated the outcomes for elderly women treated with adjuvant RT alone versus RT plus endocrine therapy (ET) after breast-conserving surgery., Patients and Methods: We queried our institutional breast cancer database for the following patients: age > 65 years, stage T1-T2N0, HR(+), and treatment with breast-conserving surgery, including adjuvant RT. The χ(2) analysis identified significant baseline differences between the groups. Cox proportional hazard methods identified predictors of endpoints on multivariate analysis. Kaplan-Meier estimates of survival were compared using the log-rank test., Results: A total of 504 patients were identified, 311 had undergone RT plus ET (62%) and 193, RT alone (38%). The median follow-up time was 88 months. The RT-alone group versus RT plus ET group had different median age (72 vs.71 years, P < .001), different median tumor size (1 vs. 1.3 cm, P < .001), lower grade (40% vs. 29%, P = .05), and fewer close or positive margins (11% vs. 19%, P = .01). The adherence rate to prescribed ET was 70%. Tumor size predicted an increased risk of distant metastasis (DM) (hazard ratio, 1.96; 95% confidence interval [CI], 1.23-3.13) and worse disease-free survival (DFS) (hazard ratio, 1.86; 95% CI, 1.22-2.86). ET nonadherence versus adherence predicted for risk of DM (hazard ratio, 5.03; 95% CI, 1.98-12.66) and DFS (HR, 4.24; 95% CI, 1.9-10.3). Of the women with DM, 83.8% had tumors > 1 cm in size., Conclusion: ET nonadherence and tumor size > 1 cm predicted an increased risk of DM and worse DFS, favoring the addition of ET in this group. However, RT alone for women with tumors less than or equal to 1 cm may be appropriate., (Copyright © 2015 Elsevier Inc. All rights reserved.)
- Published
- 2015
- Full Text
- View/download PDF
7. Triple negative breast cancer in BRCA1 mutation carriers with a complete radiologic response to neoadjuvant paclitaxel: a case report.
- Author
-
Burness ML, Obeid EI, and Olopade OI
- Subjects
- Adult, Doxorubicin therapeutic use, Female, Heterozygote, Humans, Neoadjuvant Therapy, Young Adult, Antineoplastic Agents therapeutic use, Carcinoma, Ductal, Breast drug therapy, Carcinoma, Ductal, Breast genetics, Genes, BRCA1, Mutation, Paclitaxel therapeutic use, Triple Negative Breast Neoplasms drug therapy, Triple Negative Breast Neoplasms genetics
- Published
- 2015
- Full Text
- View/download PDF
8. The role of adrenergic signaling in breast cancer biology.
- Author
-
Obeid EI and Conzen SD
- Subjects
- Adrenergic beta-Antagonists pharmacology, Adrenergic beta-Antagonists therapeutic use, Breast Neoplasms drug therapy, Breast Neoplasms psychology, Disease Progression, Female, Humans, Signal Transduction, Stress, Psychological metabolism, Stress, Psychological pathology, Breast Neoplasms metabolism, Receptors, Adrenergic, beta metabolism
- Abstract
Adrenergic signaling results from the effects of the catecholamines epinephrine and norepinephrine, on alpha- and beta-adrenergic receptors. In breast cancer, preclinical models suggest that this pathway may influence breast cancer progression through 1) increasing tumor cell survival after exposure to chemotherapeutic agents; 2) increasing breast cancer cell proliferation; and 3) altering the tumor microenvironment in angiogenesis and the inflammatory response. Epidemiologic data have suggested a correlation between drugs that indirectly affect the adrenergic pathway and breast cancer incidence. In addition, there is retrospective evidence suggesting that the use of β-adrenergic blockers in early stage breast cancer patients correlates with an increased time to recurrence. Here we review evidence from both pre-clinical models and epidemiological studies that have examined the question of whether adrenergic signaling may modify breast cancer biology.
- Published
- 2013
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.