There's a group in Brazil, Lavinia Schuler-Faccini's lab, and she's actually looking at thalidomide survivors—adult and youth patients. Right now, they're doing genetic screening in those patients to try to identify which genes may be affected in thalidomide survivors. Hopefully, her work will answer your question fully, because you might be able to actually identify genetics, or gene changes in individuals with thalidomide damage.
On May 9th, 2017. See this statement in context.