Hello,
I wanted to inspect the (non-N) regions that were added in, in GRCh38/hg38 that were not there in GRCh37/hg19. Is there a hg38 bed file with those "new" regions somewhere or is there an easy way to get that without lifting over again?
Thanks for your help!
I used the excellent remap service from NCBI:
http://www.ncbi.nlm.nih.gov/genome/tools/remap

to go from my hg19 assembly to my hg38 assembly.

I made a dummy bed file using the chromosome lengths, which you can get from here:

`mysql --user=genome --host=genome-mysql.cse.ucsc.edu -A -e "select chrom, size from hg19.chromInfo"  > hg19.genome`

and selected:

Minimum ratio of bases that must be remapped: 0

Maximum ratio for difference between source length and target length: 100000

and that gave me all possible mappings.