tpyfile="${_DATA}/therapies/${id}.tpy"
vcf="$(pdi_load "$vcffile")"
-mpx="$(sed '1s;^;\n;; s/:/;:/' "$mpxfile")"
+mpx="$([ -f "$mpxfile" ] && sed '1s;^;\n;; s/:/;:/' "$mpxfile")"
tpy="$(sed '1s;^;\n;; s/:/;:/' "$tpyfile")"
VCF(){ pdi_value "$vcf" "$@"; }