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
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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.
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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.
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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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