TERC and Friedreich ataxia: Five FA oral SCC (OSCC) tumor cell lines, one FA OSCC cervical lymph node metastasis as well as tumor‐negative and atypical smears from oral brush biopsies were analyzed with FISH probes covering 5p15.2, MYC, EGFR, TERC, 9q34.1, CCND1, 9p21 and centromeres of chromosomes 3, 6, 7, 9, 11, and 17.