FGF2 and Hermansky-Pudlak syndrome: Here, we found significantly elevated levels of VEGF-A, PDGF-BB, and bFGF in porcine HPS in comparison to porcine NS (431.4 vs. 152.7 pg/mL, p = 0.006; 1253.0 vs. 782.5 pg/mL, p = 0.009, and 18.22 vs. 9.65 pg/mL, p = 0.04, respectively).