Navigation Links
Study of concurrent radiotherapy, chemotherapy shows promise in small cell lung cancer
Date:11/3/2009

CHICAGO - Treating limited stage small cell lung cancer(LSCL) with a combination of accelerated high-dose radiotherapy and chemotherapy has shown encouraging results, opening the door to larger scale investigation, according to new research from The University of Texas M. D. Anderson Cancer Center.

The Phase II study was presented today (Nov. 3) in an oral session at the annual meeting of the American Society for Radiation Oncology (ASTRO), by Ritsuko Komaki, M.D., professor and program director of Lung Cancer Research and Thoracic Radiation Oncology, Department of Radiation Oncology at M. D. Anderson.

"While still early, these may be the most important study findings for limited stage small cell lung cancer in the past decade," said Komaki, the study's lead author. "This research is important because it achieved a high level of control of the disease while minimizing damage to the esophagus."

Treatment can be problematic

According to the American Cancer Society, lung cancer is the leading cause of cancer death for men and women in this country. Almost 220,000 cases will be diagnosed in 2009, and more than 159,000 people will die of the disease.

Small cell lung cancer is an aggressive cancer that accounts for about 20 percent of lung cancers; approximately 20 percent of these cases are classified as LSCL, defined as cancer present in one lung and possible lymph node involvement, but has not metastasized.

"Over the past few years, we have made significant progress by giving concurrent chemotherapy and thoracic radiotherapy (radiation to the chest), as well as prophylactic cranial radiotherapy (radiation to the head to prevent cancer)," said Komaki, who also holds the Gloria Lupton Tennison Distinguished Professorship in Lung Cancer Research at M. D. Anderson. "However, five-year survival in limited stage small cell lung cancer is still only 26 percent, and the likelihood of recurrence and metastasis is still too high."

A previous phase III study conducted at M. D. Anderson and other sites through the North America Intergroup, showed accelerated fractionated radiotherapy (treatment in which radiation levels are increased over time) with concurrent VP-16 (etoposide) and cisplatin (platinum-based drugs) improved five-year survival rates. But this treatment often causes other side effects.

"Severe inflammation of the lining of the esophagus, also known as acute esophagitis, is a significant risk in this type of treatment," Komaki said. "Therefore, despite its long-term survival benefit, this modality has not been popular in community hospitals."

"Boosts" increase radiation levels

Researchers at M. D. Anderson and their colleagues developed this new study to find a way to increase the level of radiation during concurrent chemotherapy without increasing damage to normal tissue. Supported by NCI grant, this clinical study was then proposed to the Radiation Therapy Oncology Group (RTOG).

Patients with LSCL were treated with thoracic radiotherapy that was accelerated slowly over three weeks. The next step included two weeks of higher radiation levels twice daily, for a total of five weeks. During radiotherapy, patients received four cycles of chemotherapy.

"We gave the patients boosts of radiation twice a day in the last two weeks of treatment, when resistant cells often start to proliferate," Komaki said.

During the median follow-up time of 19 months, 41 percent of patients experienced complete response, and another 39 percent had partial response. Despite the higher radiation dose, the rate of acute severe esophagitis was significantly lower than the previous study, 18 percent, vs. 27 percent, respectively.

However, at 36.6 percent, the two-year survival rate did not improve. In addition, while local control of the disease was excellent, 80 percent, the majority of patients still developed distant metastasis, Komaki said.

Further study is planned

Komaki said further study is needed, possibly including a cycle of induction chemotherapy before concurrent treatment. Improved systemic treatment and staging work-ups are needed too, she said.

This study has been adapted by a new randomized intergroup trial (CALGB/RTOG/ECOG/SWOG) that will enroll 700 patients in multiple sites across the country. This research will compare three radiation dose levels and treatment duration times.


'/>"/>

Contact: Laura Sussman
lsussman@mdanderson.org
713-745-2457
University of Texas M. D. Anderson Cancer Center
Source:Eurekalert  

Related medicine news :

1. New national study finds increasing number of injuries from hot tubs
2. CDC Study Links 2 Antibiotics to Birth Defects
3. Fred Hutchinson Cancer Research Center Seeks Seattle Area Volunteers for a Stress-reduction Study
4. Study reveals second pathway to feeling your heartbeat
5. New Study Finds Shock-Wave Therapy for Unhealed Fractured Bones as Effective as Surgery
6. AEterna Zentaris Announces Positive Preliminary Results for Phase 2 Study with LHRH-Receptor Targeted Cytotoxic Conjugate AEZS-108 in Ovarian Cancer
7. Data Supporting Boceprevir Response Guided Therapy Presented at American Association for the Study of Liver Diseases (AASLD) Annual Meeting
8. Study spotlights efficacy of questionnaire to identify patients at high risk for lung cancer
9. Study shows that sleep deprivation can negatively affect information processing
10. Study shows that sleep disturbances improve after retirement
11. Henry Ford Hospital study: A MRSA strain linked to high death rates
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Study of concurrent radiotherapy, chemotherapy shows promise in small cell lung cancer
(Date:10/13/2017)... ... October 13, 2017 , ... PurhealthRX , a leading Health ... technology. Applying the Purzorb™process to full spectrum CBD oil will revolutionize the rapidly growing ... form that can be easily incorporated into liquid products, while reducing costs to end ...
(Date:10/13/2017)... N.J. (PRWEB) , ... October 13, 2017 , ... The ... Holly Day Market. Featuring a collection of specialty vendors and unique items from across ... personalized and quality-focused health and wellness services offered by the VNA. The boutique ...
(Date:10/13/2017)... VA (PRWEB) , ... October 13, 2017 , ... ... of DevOps and Agile Software Development, has been awarded a contract by the ... Blanket Purchase Agreement (BPA) aims to accelerate the enterprise use of Agile methodologies ...
(Date:10/12/2017)... ... October 12, 2017 , ... Planet Fitness, one of the largest and ... plans to open a flagship location in Covington, LA at 401 N. U.S. Highway ... store next to Office Depot in the Holiday Square shopping center. Its location allows ...
(Date:10/12/2017)... (PRWEB) , ... October 12, 2017 , ... ... drug delivery system that we intend to develop to enable prevention of a ... lead to severe hearing loss, especially in pediatric patients. For cisplatin, hearing loss ...
Breaking Medicine News(10 mins):
(Date:10/5/2017)... , Oct. 5, 2017  In response to ... Oral and Maxillofacial Surgeons (AAOMS) released prescribing recommendations ... to be used as a first-line therapy to ... Recognizing the value ... White Paper "Opioid Prescribing: Acute and Postoperative Pain ...
(Date:10/2/2017)... Oct. 2, 2017 Diplomat Pharmacy, Inc. (NYSE: ... Software and Consulting, LLC , and named its founder ... based in Tennessee , will operate ... expands EnvoyHealth,s service offerings for health care partners to ... "In an interoperable world, technology ...
(Date:10/2/2017)... COPENHAGEN, Denmark , Oct. 2, 2017 The ... tool in the struggle to reverse the tide of prescription ... plan for regulating their medicine intake and stepping down their ... is set to launch in December 2017; the first 100,000 ... access. Learn more at http://www.rebound-solution.com/ ...
Breaking Medicine Technology: