Rs199826652

rs199826652 represents the same 3 basepair deletion of the amino acid Phe at position 508 of the CFTR protein, which is commonly known as delta508, as rs113993960. This SNP therefore also represents the CFTR mutation representing ~70% of all cystic fibrosis cases.

Both SNPs exist in dbSNP. In SNPedia, the main annotation is at rs113993960, since it is the name more commonly reported in results from microarray platforms.

rs199826652 is more likely to be reported in sequencing data, though, due to the left justification of indels as specified in the VCF 4.1 (sequence) file format specification released in 2011.