Mutations in HPRT transcripts in tumour and nearby healthy tissues.

Mutations present in multiple clones in the same tissues are reported in bold-type, those present in different tissues are underlined. °, mutation in healthy and tumour tissues of the same patient; *, mutation in the tumour tissues of patients A and B; #, mutation in both the healthy tissues of patient A and the tumour tissues of patient B. Numeration of nucleotide positions starts from A of the initial ATG triplet. wt: wild type sequence.