RSV G gene end variants identified in TCRI clinical samples. Attachment glycoprotein sequence analysis of 142 TCRI clinical samples identified two main categories of gene end variants: wild type (gray circle, 16% [23/142]) and A4G (blue circle, 84% [119/142]). Within the A4G category, a subgroup of gene end variants displaying an additional stop codon was identified, which we termed 2stop+A4G (red circle, 31% [37/119]).