Transcript variants of human ROR1 and ROR2 genes. Transcript variants annotated in the GRCh38 dataset from the Genome Reference Consortium were assessed on the Ensembl genome browser (release 104). TSL: transcript support level; TSL1: transcript variants supported by a minimum of one non-suspect mRNA for every splice junction; TSL2: transcript variants supported by multiple ESTs or where the strongest supporting mRNA is flagged as suspect; TSL3: transcript variants supported by a single EST; TSL4: best-supporting EST for the transcript variant is flagged as suspect; TSL5: transcript variants for which the structural model is not supported by a single transcript.