Navigation Links
Metformin increases pathologic complete response rates in breast cancer patients with diabetes

CHICAGO - Metformin, the common first-line drug for type 2 diabetes, may be effective in increasing pathologic complete response rates in diabetic women with early stage breast cancer who took the drug during chemotherapy prior to having surgery, paving the way for further research of the drug as a potential cancer therapy, according to researchers at The University of Texas M. D. Anderson Cancer Center.

The retrospective study is the first clinical research observation of the diabetes drug as a potential anti-tumor agent. The findings will be presented in a poster discussion session at the annual meeting at the American Society of Clinical Oncology (ASCO) by Sao Jirlerspong, M.D., Ph.D., a fellow, and Ana M. Gonzalez-Angulo, M.D., assistant professor, both in M. D. Anderson's Department of Breast Medical Oncology.

Metformin, an oral medication, is the most common drug prescribed for type 2 diabetes; according to Gonzalez-Angulo, more than 35 million prescription of the drug are filled annually. It's most often given to diabetic patients who are obese or have insulin resistance.

The authors decided to conduct the research after a large, intriguing epidemiologic study published last year showed that patients with diabetes who took metformin had lower incidences of cancer as well as better outcomes.

"Metformin has a novel mechanism of action. There have been a number of papers published recently that describe its action through activation of the AMP kinase pathway, which is a cellular energy sensor of the cells and potentially important pathway for the development of cancer," said Jiralerspong.

"The other interesting aspect is that Metformin works by decreasing the amount of insulin- resistance in diabetics and insulin seems to be a growth factor for cancer," said Gonzalez-Angulo.

Using the M. D. Anderson Breast Medical Oncology database, Gonzalez-Angulo, Jiralerspong and their team identified 2,529 women with early-stage breast cancer who received chemotherapy in the neoadjuvant setting, before surgery. Of the patients, 2,374 were non-diabetic, 68 were diabetic but not taking metaformin and 87 were diabetic and taking the drug. The study's endpoint was pathologic complete response, or the absence of cancer at the time of surgery.

The researchers found that the pathologic complete response rates in the diabetic breast cancer patients taking Metformin was 24 percent, three times higher than the rates in diabetic patients not taking the drug, 8 percent. In the non-diabetic women, the pathologic complete response rate was 16 percent. After adjusting for other factors, the researchers found that metformin was an independent predictor of pathologic complete response in diabetic patients.

While very exciting, the findings are still very early, cautioned Jiralerspong and Gonzalez-Angulo, and further investigation with metformin is needed.

"We need to study the mechanism of the drug - perhaps it's the decrease in insulin levels, or it may be that the drug has an anti-tumor effect that we to look at in vivo," said Gonzalez-Angulo. "Our next step is to conduct a number correlative studies to try and further understand its mechanism."

M. D. Anderson also plans to open a clinical trial with metformin in combination with hormonal therapy for metastatic breast cancer patients who are obese. The study will be led by Francisco Esteva, M.D., Ph.D., associate professor in the Department of Breast Medical Oncology.


Contact: Laura Sussman
University of Texas M. D. Anderson Cancer Center

Related medicine news :

1. Data from Pooled Analyses Demonstrates Welchol, Combined with Metformin- or Sulfonylurea-Based Therapy, Significantly Lowers Blood Glucose in Adults with Type 2 Diabetes
2. Prophylactic cranial irradiation in small cell lung cancer significantly increases survival
3. Fat on chest and upper back increases risk of insulin resistance
4. Handling Stress Properly Increases Good Cholesterol
5. High alcohol consumption increases stroke risk among Chinese men
6. High alcohol consumption increases stroke risk, Tulane study says
7. Genetic predisposition increases childhood asthma risk
8. Smoking increases risks for head and neck cancers for men and women
9. Passive smoking increases sleep disturbance among pregnant women
10. Frequent alcohol consumption increases cancer risk in older women
11. Tyco International Increases Quarterly Dividend 36 Percent to 15 Cents per Share; Initiates New $1 Billion Share Repurchase Program
Post Your Comments:
Related Image:
Metformin increases pathologic complete response rates in breast cancer patients with diabetes
(Date:11/25/2015)... (PRWEB) , ... November 25, 2015 , ... On November ... of Tri Lite’s personal heating products business. Cozy Products explains what this ... heaters that fit in well with the Cozy Products business model: to sell personal ...
(Date:11/25/2015)... ... 25, 2015 , ... Brillianteen, McGaw YMCA’s student-produced musical show, ... 65th Anniversary Brillianteen Revue, scheduled for March 4-6, 2016. Auditions for this final ... has been a treasured tradition for numerous families in the Evanston community. Over ...
(Date:11/25/2015)... ... November 25, 2015 , ... ... for people struggling with eating disorders as a result of the $20,000 raised ... event, held at Fox Run Golf Club in Eureka, will help individuals who ...
(Date:11/25/2015)... , ... November 25, 2015 , ... ... of philanthropic seniors, is resulting in a way for homeless people to have ... Schaumburg have launched a new initiative whereby they are repurposing plastic bags into ...
(Date:11/25/2015)... ... 2015 , ... Students and parents have something to be thankful for this ... Impact awards. California Casualty is proud to support the contest designed to ... reckless driving, the number one killer of young drivers. , Almost 1,000 entries ...
Breaking Medicine News(10 mins):
(Date:11/25/2015)... , Nov. 25, 2015 On Tuesday, ... federal bellwether trial against Wright Medical Technology, Inc. ... their Conserve metal-on-metal hip implant device, awarded $11 ... a two week trial and three days of ... hip device was defectively designed and unreasonably dangerous, ...
(Date:11/25/2015)...  ARKRAY USA , Inc., a ... demonstrating the accuracy of its blood glucose meter systems. ... Diabetes and Cardiovascular Disease in Los Angeles ... ® 01 meter and the Assure ® ... to accurately measure glucose levels in blood is essential ...
(Date:11/25/2015)... MELVILLE, N.Y. , Nov. 25, 2015  Henry ... products and services to office-based dental, medical and animal ... Dental (GNYDM) Meeting the Henry Schein ConnectDental® Pavilion ... industry,s broadest array of open solutions designed to help ... Click here for a schedule of ...
Breaking Medicine Technology: