PTH and invasive breast carcinoma: Chimeric transcripts with PTH as the 3′-end partner gene have been described in two tumors: in a lung squamous cell carcinoma, where exon 1 of the BTB domain containing 10 (BTBD10) gene fused to exon 1 of PTH (BTBD10::PTH) and in a breast invasive carcinoma, where exon 1 of the nuclear mitotic apparatus protein 1 (NUMA1) fused to exon 1 of PTH (NUMA1::PTH) [14].