NTRK1 and neoplasm: To validate the discovery of the TrkA-1q23.1 amplicon as a potential hotspot associated with tumor progression, we performed genomic qPCR in a cohort of 64 primary MMs, including 29 samples previously analyzed by aCGH (we were able to perform qPCR only on 29 samples of the 31 included in the aCGH set, because of the limited amount of starting gDNA).