1274 advanced NSCLC patients with cytological specimens or tumor tissue had their ALK fusion status detected by the method of RT-PCR.
The average concentration of RNA extracted from specimens and the incidence of ALK fusion were similar between cytology and tissue group.
Patients detected with cytological specimens had a similar response to ALK inhibitor as those with tissue.
Cytological specimens could be regarded as alternative samples for ALK fusion detection by the method of RT-PCR in patients with advanced NSCLC.