Gretchen G. Kimmick

Prof. Gretchen G. Kimmick


Research Focus & Metrics

Academic Career Length

30Years (1997-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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20 July 2009 in Journal of Clinical Oncology
Verified
Journal Article
Closed access
GKGretchen G. Kimmick
Gretchen G. Kimmick
RARoger Anderson
Roger Anderson
FCFabian Camacho
Fabian Camacho
MBMonali Bhosle
Monali Bhosle
WHWenke Hwang
Wenke Hwang
RBRajesh Balkrishnan
Rajesh Balkrishnan
Purpose: Use of adjuvant hormonal therapy, which significantly decreases breast cancer mortality, has not been well described among poor women, who are at higher risk of cancer-related death. Here we explore use of adjuvant hormonal therapy in an insured, low-income population. Methods: A North Carolina Cancer Registry–Medicaid linked data set was used. Women with hormone receptor–positive or unknown, nonmetastatic breast cancer, diagnosed between 1998 and 2002, were included. Main outcomes were (1) prescription fill within 1 year of diagnosis, (2) adherence (medication possession ratio), and (3) persistence (absence of a 90-day gap in prescription fills over 12 months). Results: The population consisted of 1,491 women (mean age, 67 years). Sixty-four percent filled prescriptions. Predictors of prescription fill included the following: older age (odds ratio [OR], 1.01; P = .017), greater number of prescription medications (OR, 1.06; P < .001), nonmarried status (OR, 1.82; P = .001), higher stage (OR, 1.83; P < .001), positive hormone receptor status (positive v unknown, OR, 1.98; P < .001), not receiving adjuvant chemotherapy (OR, 1.74; P = .001), receipt of adjuvant radiation (OR, 1.55; P = .004), and treatment in a small hospital (OR, 1.49; P = .024). Adherence and persistence rates were 60% and 80%, respectively. Nonmarried status predicted greater adherence (OR, 1.90; P = .006) and persistence (OR, 1.75; P = .031). Conclusion: Prescription fill, adherence, and persistence to adjuvant hormonal therapy among socioeconomically disadvantaged women are low. Improving use of adjuvant hormonal therapy may lead to lower breast cancer–specific mortality in this population.

1 March 2006 in The Breast Journal
Verified
Journal Article
Closed access
PDF file
GKGretchen G. Kimmick
Gretchen G. Kimmick
JLJames Lovato
James Lovato
RMRichard McQuellon
Richard McQuellon
EREmily Robinson
Emily Robinson
HMHyman B. Muss
Hyman B. Muss
We observed the relief of hot flashes in breast cancer survivors taking tamoxifen and treated with sertraline for depression. Our objective was to assess the effect of sertraline on the frequency and severity of hot flashes, mood status, and health-related quality of life. We used a randomized, double-blind, placebo-controlled, crossover study using 6 weeks of sertraline (50 mg each morning) versus placebo. Study participants were 62 breast cancer survivors from an oncology clinic in a tertiary care center on adjuvant tamoxifen reporting bothersome hot flashes. Patients were asked to keep a daily hot flash diary to record hot flash frequency and severity, from which hot flash scores (frequency x severity) were calculated. The Center for Epidemiologic Studies depression scale and Functional Assessment of Cancer Therapy--Breast (FACT-B) (at baseline, 6 weeks, and 12 weeks) were used to assess mood and quality of life. Sixty-two women were accrued. Forty-seven women (median age 53.9 years, range 36.6-77.1 years; 89% postmenopausal; 85.5% Caucasian) completed the first 6 weeks and 39 completed 12 weeks. The baseline daily hot flash frequency and score were 5.8 (standard deviation 4.1) and 11.5 (14.0), respectively. At the end of the first 6 weeks, hot flash frequency decreased by 50% in 36% of those taking sertraline compared to 27% taking placebo. In the crossover analysis, sertraline was significantly more effective than placebo: women crossing from placebo to sertraline had a decrease (-0.9 and -1.7) in hot flash frequency and score, whereas those crossing from sertraline to placebo had an increase (1.5 and 3.4) in hot flash frequency and score (p = 0.03 and 0.03). Forty-eight percent preferred the sertraline period, 11% preferred the placebo period, and 41% had no preference (p = 0.006). Measures of depression and quality of life were within normal range and did not change significantly within treatment groups. Sertraline decreases hot flashes in breast cancer survivors taking tamoxifen and women prefer sertraline to placebo. Further study of sertraline for the management of hot flashes is warranted.

1 April 2005 in Journal of Clinical Oncology
Verified
Journal Article
Closed access
PDF file
GKGretchen G. Kimmick
Gretchen G. Kimmick
BPBercedis L. Peterson
Bercedis L. Peterson
AKAlice B. Kornblith
Alice B. Kornblith
JMJeanne Mandelblatt
Jeanne Mandelblatt
JJJeffrey L. Johnson
Jeffrey L. Johnson
HMHyman B. Muss
Hyman B. Muss
Purpose To design and test a geriatric educational intervention to improve accrual of cancer patients age 65 years and older to cooperative group–sponsored treatment trials. Methods Main member institutions of the Cancer and Leukemia Group B (CALGB) and its affiliates were randomly assigned to receive standard information (n = 73) or educational intervention (n = 53). Standard information included CALGB Web site access and periodic notification about existing trials. The geriatric educational intervention included standard information plus: (1) an educational seminar; (2) educational materials; (3) a list of available protocols for use on charts; (4) a monthly e-mail and mail reminders for 1 year; and (5) a case discussion seminar. The main outcome was percentage of accrual of older persons to phase II and III treatment protocols after study initiation compared with baseline. Results There were 3,032 patients entered onto trials in the baseline year, and 2,160 and 1,239 during the 2 years postintervention, respectively. Overall percentage of accrual of older patients was 37% at baseline, and 33% and 31% during the first and second years after intervention. There was no improvement in accrual in the intervention versus control arm: 36% v 32% in the first year and 31% v 31% in the second year. Conclusion Accrual of older patients was not increased by this intervention. Reasons for lack of effect include low intervention intensity, high baseline accrual rates, and closure of several high-accruing protocols during the study. More intense and multifaceted approaches will be needed to change physician (and patient) behavior and to increase accrual of older persons to clinical trials.

1 October 2015 in The Breast
Verified
Journal Article
Closed access
GKGretchen G. Kimmick
Gretchen G. Kimmick
SESara N. Edmond
Sara N. Edmond
HBHayden B. Bosworth
Hayden B. Bosworth
JPJeffrey Peppercorn
Jeffrey Peppercorn
PMPaul K. Marcom
Paul K. Marcom
RSRebecca A. Shelby
Rebecca A. Shelby

10 February 2014 in Journal of the American Geriatrics Society
Verified
Journal Article
Closed access
PDF file
GKGretchen G. Kimmick
Gretchen G. Kimmick
SFSteven T. Fleming
Steven T. Fleming
SSSusan A. Sabatino
Susan A. Sabatino
XWXiao‐Cheng Wu
Xiao‐Cheng Wu
WHWenke Hwang
Wenke Hwang
TGThe Centers for Disease Control and Prevention National Program of Cancer Registry Patterns of Care Study Group
The Centers for Disease Control and Prevention National Program of Cancer Registry Patterns of Care Study Group

15 November 2020 in JNCI Cancer Spectrum
Verified
Journal Article
Open access
PDF file
SSShlomit S Shachar
Shlomit S Shachar
ADAllison Deal
Allison Deal
KRKatherine E Reeder-Hayes
Katherine E Reeder-Hayes
KNKirsten A Nyrop
Kirsten A Nyrop
NMNatalia Mitin
Natalia Mitin
HMHy Muss
Hy Muss
Although chemotherapy saves lives, increasing evidence shows that chemotherapy accelerates aging. We previously demonstrated that mRNA expression of p16INK4a, a biomarker of senescence and molecular aging, increased early and dramatically after beginning adjuvant anthracycline-based regimens in early stage breast cancer patients. Here, we determined if changes in p16INK4a expression vary by chemotherapy regimen among early stage breast cancer patients. We conducted a study of stage I-III breast cancer patients receiving adjuvant or neoadjuvant chemotherapy. p16INK4a expression was analyzed prechemotherapy and postchemotherapy (median 6.2 months after the last chemotherapy) in peripheral blood T lymphocytes. Chemotherapy-induced change in p16INK4a expression was compared among regimens. All statistical tests were 2-sided. In 146 women, chemotherapy was associated with a statistically significant increase in p16INK4a expression (accelerated aging of 17 years; P < .001). Anthracycline-based regimens were associated with the largest increases (accelerated aging of 23 to 26 years; P ≤ .008). Nonanthracycline-based regimens demonstrated a much smaller increase (accelerated aging of 9 to 11 years; P ≤ .15). In addition to the type of chemotherapy regimen, baseline p16INK4a levels, but not chronologic age or race, were also associated with the magnitude of increases in p16INK4a. Patients with lower p16INK4a levels at baseline were more likely to experience larger increases. Our findings suggest that the aging effects of chemotherapy may be influenced by both chemotherapy type and the patient’s baseline p16INK4a level. Measurement of p16INK4a expression is not currently available in the clinic, but nonanthracycline regimens offering similar efficacy as anthracycline regimens might be favored.