… Dr. James Leckman, a professor of child psychiatry at Yale and specialist in Tourette’s syndrome, was the lead author on what is perhaps the most persuasive study challenging the PANDAS hypothesis. That long-term study, published in 2011, found no compelling evidence linking the exacerbation of tic and OCD symptoms to new strep infections.
Yet Leckman tells me that in late 2008, well after all the patients had been enrolled in the study, he came to an astonishing realization: He and his coauthors had been studying the wrong children. Most of the kids in the study resembled those he regularly sees in his clinic — children with “garden-variety” Tourette’s and OCD. But after working with more physicians treating PANDAS patients, he had come to see firsthand that there was a distinct group of kids who literally had changed overnight, with dramatic onslaughts of OCD and other symptoms. And these “true” PANDAS/PANS cases weren’t represented in his study in any meaningful way.
Leckman says he lobbied his coauthors, who included Harvey Singer, to admit to this failing in their paper. But they refused, insisting they had followed the published PANDAS criteria in selecting their subjects. Leckman had to concede they were right — the children all met the criteria Swedo’s team had established. It’s just that he now believed those criteria were far too broad. So Leckman’s name was listed first on an influential paper that he felt was technically accurate but missed the larger point.
Nonetheless, Leckman had already become a changed man. Shortly after his epiphany, he says, “I picked up the phone and called Sue Swedo and told her that I had become a convert.” ...
