Ws. Samowitz et al., ALTERNATIVELY SPLICED ADENOMATOUS POLYPOSIS-COLI (APC) GENE TRANSCRIPTS THAT DELETE EXONS MUTATED IN ATTENUATED APC, Cancer research, 55(17), 1995, pp. 3732-3734
Reverse transcription-PCR combined with either (a) restriction enzyme
digestion and repeat PCR or (b) ligase chain reaction has identified t
wo new alternatively spliced transcripts of the adenomatous polyposis
coli (APC) gene. In one of these transcripts exons 1-4 and the first 1
6 bases of exon 5 are deleted; in the other exons 2-4 and the first 16
bases of 5 are deleted. Both transcripts use an intraexonic splice ac
ceptor in exon 5. These transcripts delete exons mutated in attenuated
APC (3 and 4) and could account for the reduction in severity of this
variant.