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Virtual Journal Club

Volume 2, Number 10 – October, 2003

The following articles appeared in this month's issues of the surveyed journals. Articles that seem to be of most interest to the practicing gynecologic oncologist are included. The journals that are surveyed are New England Journal of Medicine, Journal of Clinical Oncology, Gynecologic Oncology, Cancer, American Journal of Obstetrics and Gynecology, Lancet, Cancer Research, Obstetrics and Gynecology, Journal of the National Cancer Institute, Journal of the American Medical Association and American Journal of Surgical Pathology. The participants in this program are the active clinical fellows at Memorial Hospital: Mario Leitao, Christopher Awtrey, Sarah Ferguson, Alan Schlaerth, Destin Black and Margrit Juretzka. The managing editor is Douglas Levine. Comments, questions, complaints and suggestions are always welcome, please E-mail us at: VJC@smgo.org or click here.  To subscribe or unsubscribe to the VJC, click here.

Gynecologic Oncology – Christopher Awtrey

[Ed note: This is one of two articles in this month's issue of GYN Oncology reporting on the role of c-KIT in uterine sarcomas.  The other article can be found on pages 3-8.]

Title: Uterine sarcomas express KIT protein but lack mutation(s) in exon 11 or 17 of c-KIT

Authors: R.S. Rushing, S. Shajahan, D. Chendil, J. Wilder, J. Pulliam, E. Lee, F Ueland, J van Nagell, M. Ahmed, S. Lele

Source: Gynecologic Oncology, Volume 91, Issue 1, October 2003, Pages 9-14.

Summary: The success of targeted biologic agents such as the tyrosine kinase inhibitor STI571 has sparked interest in the use of these agents in treating other types of malignancies. Uterine malignancies are relatively rare, but carry a high risk of recurrence and mortality rate. Because of the embryologic and histologic similarities between GIST and uterine sarcomas interest of the use of this form of targeted therapy is high. In this study 25 uterine sarcomas including 14 MMMT, 7 LMS,  2 ESS and 2 high grade heterologous sarcomas were analyzed for expression of c-KIT by IHC. A mutational analysis was then performed on all the tumors for the KIT-activating mutation. Two mutation sites in exon 11 or 17 are associated with response of GIST to STI571. The group found that all 25 tumors expressed c-kit by IHC and that this staining was moderate to strong in 22 of the 25 cases. In only one tumor was there a deletion of both exons 11 and 17; the rest harbored no mutation. The authors conclude that despite the fact that the tumors have IHC evidence of c-KIT, STI571 is unlikely to work in these tumors as they lack the KIT-activating mutation.

Click here for abstract from Gynecologic Oncology

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Journal of Clinical Oncology - Mario Leitao

Title: Prognostic Significance of p53 Mutation and p53 Overexpression in Advanced Epithelial Ovarian Cancer: A Gynecologic Oncology Group Study

Authors: Havrilesky, Laura, Darcy, Kathleen M., Hamdan, Hasnah, Priore, Roger L., Leon, Jorge, Bell, Jeffrey, Berchuck, Andrew

Source: J Clin Oncol 2003 21: 3814-3825

Summary: The prognostic significance of p53 mutations and overexpression in advanced epithelial ovarian cancers was examined in primary tumors from 125 patients participating in a GOG randomized phase III treatment protocol. Mutational analysis of p53 was performed in RNA or genomic DNA extracted from frozen tumor. An immunohistochemistry assay was used to detect p53 overexpression in fixed tumor. There were 81 patients (74%) with a single mutation, three patients (3%) with two mutations, and 25 patients (23%) lacking a mutation in exons 2 to 11 of p53. A mutation in exons 2 to 11 of p53 was associated with a short-term improvement in overall survival and progression-free survival. Adjusted Cox modeling demonstrated a 70% reduction in risk of death (P = .014) and a 60% reduction in risk of disease progression (P = .014) for women with such mutations. However, these striking risk reductions increased over time (P < .02) and eventually disappeared with longer follow-up. Overexpression of p53 was associated with tumor grade but not with patient outcome. Alterations in p53 are a common event in advanced epithelial ovarian cancer. A mutation in p53, but not overexpression of p53, is associated with a short-term survival benefit.

Click here for abstract from JCO

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Journal of the National Cancer Institute – Alan Schlaerth

Nothing of interest this month

Obstetrics and Gynecology – Margrit Juretzka

Title: Outcome of fertility-sparing treatment with progestins in young patients with endometrial cancer

Authors: Walter H. Gotlieb, Mario E. Beiner, Bruria Shalmon, Yaacov Korach, Yaacov Segal, Nissim Zmira, Joure Koupolovic and Gilad Ben-Baruch

Source: Obstetrics & Gynecology, Volume 102, Issue 4, October 2003, Pages 718-725

Summary: The authors report on 13 patients with endometrial adenocarcinoma who underwent conservative treatment with progestins. Mean age of patients at diagnosis was 31 years. Eleven patients had well-differentiated adenocarcinomas; the other 2 had moderately differentiated tumors. All patients had a response with a mean time of 3.5 months. Three patients delivered 9 viable infants (2 patients pregnant at publication). While 6 patients had a recurrence (median 40 months), four were treated with further progestin therapy (2/4 subsequently had surgical treatment revealing adenocarcinoma on final pathology). All patients remained without evidence of disease with a mean follow-up time of 82 months. The authors conclude that conservative management of well-differentiated endometrial carcinoma in young patients does not seem to worsen the prognosis.

Click here for abstract from Obstetrics & Gynecology

Title: Changes in cervical cancer incidence after three decades of screening US women less than 30 years old

Authors: Pamela G. Chan, Hai-Yen Sung and George F. Sawaya

Source: Obstetrics & Gynecology, Volume 102, Issue 4, October 2003, Pages 765-773

Summary: The authors report on the incidence trends of invasive cervical cancer in US women under 30 years of age based on data from  the SEER database. Between 1973 to 1999, the incidence rates of cervical carcinoma declined overall (estimated annual changes of -0.94% (95% CI -1.47%, -0.41%). While incidence rates of squamous cell carcinoma declined with an estimated annual change of -1.10% (95% CI -1.59%, -0.62%), rates of adenocarcinoma increased (+2.90%; 95% CI 1.34%, 4.49%). The authors conclude that because of the small number of actual cases, caution must be exercised in interpreting these trends.

Click here for abstract from Obstetrics & Gynecology

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American Journal of Obstetrics and Gynecology – Sarah Ferguson

Title: Ovarian cancer: changes in patterns at diagnosis and relative survival over the last three decades

Authors: Jill S. Barnholtz-Sloan, Ann G. Schwartz, Faisal Qureshi, Suzanne Jacques, John Malone and Adnan R. Munkarah

Source: American Journal of Obstetrics and Gynecology, Volume 189, Issue 4, October 2003, Pages 1120-1127

Summary: This population-based study uses the SEER data base to compare changes in demographics, prognostic factors and relative survival in women with invasive epithelial ovarian cancer (EOC) between three decades.  There was a significant increase in the proportion of African American women diagnosed with invasive EOC. There was an increase in the proportion of all women undergoing primary surgery and women with advanced disease undergoing primary surgery over the three decades.  Overall relative survival increased over the past three decades. Two year relative survival significantly increased for Caucasian women, however there was no change in 5-year survival. There was no significant change in 2 or 5 year survival over the three decades for African American women and they continued to have a worse prognosis compared to Caucasian women. The authors conclude the increase in minorities with a diagnosis of EOC reflects increased access to health care or a changing population base. The increase in women undergoing primary surgery reflects the changing practice patterns, recognizing the importance of primary debulking surgery in the treatment of women with EOC. In addition, the improved survival likely is due to the combination of surgery, introduction of platinum chemotherapy and general supportive care.

Click here for abstract from Am J Ob/Gyn

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New England Journal of Medicine – Mario Leitao

Title: Risk of Cervical Cancer Associated with Extending the Interval between Cervical-Cancer Screenings

Authors: Sawaya, George F., McConnell, K. John, Kulasingam, Shalini L., Lawson, Herschel W., Kerlikowske, Karla, Melnikow, Joy, Lee, Nancy C., Gildengorin, Ginny, Myers, Evan R., Washington, A. Eugene

Source: N Engl J Med 2003 349: 1501-1509

Summary: The prevalence of biopsy-proven cervical neoplasia among 938,576 women was stratified according to the number of previous consecutive negative Papanicolaou tests. Among 31,728 women 30 to 64 years of age who had had three or more consecutive negative tests, the prevalence of biopsy-proven cervical intraepithelial neoplasia of grade 2 was 0.028 percent and the prevalence of grade 3 neoplasia was 0.019 percent; none of the women had invasive cervical cancer. To avert one additional case of cancer by screening 100,000 women annually for three years rather than once three years after the last negative test, an average of 69,665 additional Papanicolaou tests and 3861 colposcopic examinations would be needed in women 30 to 44 years of age and an average of 209,324 additional Papanicolaou tests and 11,502 colposcopic examinations in women 45 to 59 years of age. As compared with annual screening for three years, screening performed once three years after the last negative test in women 30 to 64 years of age who have had three or more consecutive negative Papanicolaou tests is associated with an average excess risk of cervical cancer of approximately 3 in 100,000.

Click here for abstract from NEJM

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Journal of the American Medical Association – Margrit Juretzka

Title: Effects of Estrogen Plus Progestin on Gynecologic Cancers and Associated Diagnostic Procedures: The Women's Health Initiative Randomized Trial

Authors: Anderson, Garnet L., Judd, Howard L., Kaunitz, Andrew M., Barad, David H., Beresford, Shirley A. A., Pettinger, Mary, Liu, James, McNeeley, S. Gene, Lopez, Ana Maria

Source: JAMA 2003 290: 1739-1748

Summary: This large randomized, double-blind, placebo controlled trial of 16,608 postmenopausal women receiving estrogen plus progestin vs placebo was halted early secondary to the findings of an increased risk of breast cancer and a summary measure indicating that risks exceeded benefits. Postmenopausal patients who had not had a hysterectomy at baseline received either .625mg of conjugated equine estrogen plus 2.5mg medroxyprogesterone acetate or placebo. In this study, the authors report on the incidence of invasive cancer of the ovary (32 patients), endometrium (58 patients), non-endometrial (1), cervix (13) and other (7) and over a follow-up period of 5.6 years. Compared to placebo, the hazard ratio for ovarian cancer patients receiving HRT was 1.58 (95% CI, .77-3.24); for endometrial cancer the hazard ratio was .81 (95% CI, .48-1.36). While the authors conclude that continuous combined HRT may increase the risk of ovarian cancer, they acknowledge there was no significant increase in the rates of invasive ovarian cancer.

Click here for abstract from JAMA

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Cancer – Destin Black

Title: The effect of cyclooxygenase-2 expression on tumor vascularity in advanced stage ovarian serous carcinoma

Authors: Rouba Ali-Fehmi, M. D., Mingxin Che, M.D., Ibrahim Khalifeh, M.D., John M. Malone, M.D., Robert Morris, M.D., W. Dwayne Lawrence, M.D., Adnan R. Munkarah, M.D.

Source: Cancer, October 1, 2003, Vol.98, Number 7; Pages 1423 - 1429

Summary: In this retrospective review, the authors evaluated 125 patients with high-grade advanced stage serous carcinoma who underwent primary surgery.  IHC staining with antibodies to COX-2, CD34, p53, bcl-2, EGFR, and Her-2/neu was performed.  Statistical analysis was performed to investigate the correlations between COX-2 expression and clinicopathologic characteristics, tumor microvessel density, and expression of other molecular markers.  The authors report that patients who had tumors with high COX-2 expression had a worse prognosis compared with patients who had tumors with low expression.  Also, increased COX-2 expression was significantly correlated with tumor microvessel density.  There was no association between COX-2 expression and expression levels of p53, bcl-2, EGFR, or Her-2/neu.  A multivariate analysis revealed that COX-2 expression was the strongest predictor of survival among the different prognostic factors.

Click here for abstract from Cancer

Title: Phase II evaluation of three-day topotecan in recurrent platinum-sensitive ovarian carcinoma - A Gynecologic Oncology Group study

Authors: David Scott Miller, M.D. , John A. Blessing, Ph.D. , Samuel S. Lentz, M.D., D. Scott McMeekin, M.D.

Source: Cancer, October 15, 2003, Vol.98, Number 8; Pages 1664 - 1669

Summary: This multicenter Phase II study included patients with platinum sensitive recurrent ovarian carcinoma or primary peritoneal carcinoma.  A total of 30 patients were enrolled with a median age of 56 years.  Patients received an intravenous dose of topotecan of 2.0 mg/mē per day for 3 days every 21 days until disease progression or unacceptable toxicity occurred.  Twenty-nine patients were evaluated for toxicity and efficacy.  There were 2 (7%) complete and 2(7%) partial responses with an overall response rate of 14%.  Sixteen (55%) patients had stable disease and 9 (31%) experienced disease progression.  The primary side effect was hematologic.  Eighteen of 30 (60%) patients developed grade 4 neutropenia.  Ten patients developed Grade 3 leukopenia and 9 had grade 3 neutropenia.  The authors concluded that a 3-day regimen of topotecan was well tolerated although the response rate was lower than that for the standard 5-day schedule.

Click here for abstract from Cancer

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Lancet – Sarah Ferguson

Nothing of interest this month

Cancer Research – Destin Black

Nothing of interest this month

American Journal of Surgical Pathology – Alan Schlaerth

Nothing of interest this month

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