its members = the research team's members?

Context:
One team identified a previously unknown mutation that almost certainly causes a neuromuscular disorder by sequencing the genome of one of its members, James Lupski, who has Charcot-Marie-Tooth syndrome. Mutations in more than two dozen genes have previously been linked to the diseases but Lupski, a medical geneticist at Baylor College of Medicine in Houston, Texas, is negative for all of them.