all non-ALT position in a VCF are non-variants?

Question

[cocchi.e89]

Dear all,

it is a silly question but I have to make extremely sure about an analysis that I am doing. In a VCF file, all positions with NO ALT allele are considered as NON-VARIANT right?

ex. 'CHROM': 'chr1', 'POS': '1243983', 'ID': '.', 'REF': 'G', 'ALT': '.', 'QUAL': '.', 'FILTER': 'OffTarget;LowGQX', 'FORMAT': 'GT:GQX:DP:DPF', 'XXX': '0/0:3:1:0', 'INFO': {'END': '1243995', 'BLOCKAVG_min30p3a': 'BLOCKAVG_min30p3a'}

(in this case I know that the position is absent in my case but I mean as general rule for script).

Thanks a lot for any help!!

[Pierre Lindenbaum]

with NO ALT allele are considered as NON-VARIANT right?

NON-VARIANT yes.

[cocchi.e89]

Thanks for confirming!