Convert SNPs from GrCh38 to 37

Question

[arronslacey]

The following SNPs are from the GRCh38 build

1 158766655 158766655 C T
1 162023402 162023402 T C
1 169793666 169793666 T G
1 6554475 6554475 G A
3 179604597 179604597 A C
4 39062542 39062542 A C
5 177089630 177089630 G A
8 142786489 142786489 C T
8 142879785 142879785 C T
10 86654812 86654812 C T

how can I map them to GRCh37 (where possible)?

Thanks

[chrisclarkson100]

I too am planning to do what's asked in the question. However I'm wondering- Is it possible that I may lose variants if I "lift backwards"? Hence is it best to always lift forwards?? Thanks in advance

Answer 1

[harold.smith.tarheel]

Use NCBI's remap or UCSC's LiftOver.

Answer 2

[Maxime Lamontagne]

Try UCSC LiftOver : https://genome.ucsc.edu/cgi-bin/hgLiftOver