Characterization of two unusual allele variants at the STR locus ACTBP2 (SE33).

Two uncommon allelic variants have been observed at the locus ACTBP2 (SE33) and both were located far outside the ladder range of commercially available typing kits. The short variant showed a 60-bp deletion upstream of the 5'-flanking region with a typical type I repeat structure, which actually would have to be assigned as allele 16. The long allele revealed a typical type III sequence structure that has to be designated as allele 41.