SNPs in FGF10 may be associated with susceptibility to chronic obstructive pulmonary disease (COPD).307FGF10 SNPs are also associated with airway branch variants.308 SNPs in FGF3, FGF7, and FGFR4 are associated with respiratory distress syndrome (RDS). This evidence concerns the gene FGFR4 and newborn respiratory distress syndrome.