Patients generally react well to initial chemotherapy, but the disease almost always returns. Less than 5 % of individuals are alive five years after being diagnosed with the condition. Small cell lung cancers makes up about 10-15 % of lung cancer cases and is the most aggressive form of lung malignancy. Although small cell lung tumors possess many mutated genes, non-e of these may be considered a driver – a gene that actually spurs tumor growth – and non-e makes a good target for drug therapy. As a result, experts have sought other strategies for attacking the condition. Dana-Farber researchers began with mice that acquired small cell lung tumors manufactured to resemble those in humans.Among women between the age range of 50 and 69 years in the screening group, the death rate was 18.1 per 100,000 person-years, as compared with 25.3 per 100,000 person-years among their historical counterparts, for a difference of 7.2 deaths per 100,000 person-years , a member of family reduced amount of 28 percent . Among women in the nonscreening group, the rate of death was 21.2 per 100,000 person-years, as compared with 26.0 per 100,000 person-years amongst their historical counterparts, for a notable difference of 4.8 deaths per 100,000 person-years , a relative reduced amount of 18 percent .13). Since the differences between your current groups and historic groups had been 7.2 deaths per 100,000 person-years in the screening group and 4.7 to 6.4 of 7.2).