predictMRL Get the 100nt 5' UTR sequence upstream of start codon for transcripts in transcriptIdColumn and predict their MRL
predictMRL(variantsTable, seqTable, transcriptIdColumn)variants table
corresponding 5' UTR sequence table from Ensembl DB. Have two columns: ensembl_transcript_id and seq
the name of the transcript id column
A list predicted MRL (NA if the transcript id in that row is NA). If transcriptIdColumn does not exist in the variantsTable, return NA