Complex sentence: Bonifas et al., 1987 or mutations Basler et al., 1992 in the "STS" gene, and can also occur in the context of larger deletions causing contiguous gene syndromes.
Split into simpler sentences: Bonifas et al., 1987 or mutations Basler et al., 1992 in the "STS" gene. XLI and can also occur in the context of larger deletions causing contiguous gene syndromes.