NCBI NC_000007.14 SQ.F-LrLMe1SRpfUZHkQmvkVKFEGaoDeHul
UCSC hg38 chr7.fa SQ.KZ9qSyP_4fsfj3sWAH9JfhGbo5jeo6Bh
154,575,459 R→N 154,578,614 Y→N
154,578,615 S→N 154,578,679 Y→N
4 of 159,345,973 positions. NCBI retains IUPAC ambiguity codes; UCSC uses N. All four differences are in DPP6.