Sequences at the integration sites aligned to the L1 endonuclease cleavage consensus site.

AA-TTTT L1 endonuclease cleavage consensus site.*This integration site cannot be unequivocally determined due to an associated 71-bp deletion and the lack of a TSD. The given integration site assumes either a model where the second nick occurred downstream instead of upstream to the first nick that affected the NF1 sense strand or a model where the reverse transcribed Alu cDNA strand (termed minus strand) invaded a double-strand break 71 bp downstream of the given integration site. Integration sites indicated with the same symbole §, # or ‡ are identical.