A score file with chr & positions instead of SNP IDs

Hello,

I am calculating PRSs using the command:

 plink2 \
–bfile plink_file \
–score score_file 1 2 3 header cols=+scoresums,-scoreavgs \
–out PRS_sum

Currently,  the columns in my score_file are: SNP IDs, effect allele, beta weights.

I was wondering if possible to give instead of SNP IDs in the first column, chrs and positions (with an extra column)

e.g. a score file with 4 columns: chr, position,  effect allele, beta weights. Or a similar structure.

 

If yes, which flags should be used?

Thank you!

Roni

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