Recently Answered Questions on Pemetrexed

My father hs Carcinoma lung. Has past history of CLL since 2008. He is gettin chemo treatment carboplatin + pemetrexed for lung. 2 cycles done.His blood counts have dropped. R there any other mutation/genetic study apart from ALK and EGFR which wer -ve in his case. Is there any targeted therapy which will not kill healthy cells.pls advise