MMP9 and non-small cell lung carcinoma: Rollin et al. explored the effect of the MMP9 -1562 C/T and the MMP2 -735C/T polymorphisms in NSCLC survival among Caucasian patients and found that the MMP9 -1562 C/T polymorphism did not present a significant increase in survival rate, in accord with our results (although it should be noted that Rollin's study includes only 90 patients).