unproven

Autism researchers and doctors say that the claim is unproven, and that women are safe taking the medicine as needed, in consultation with their physician.

A federal judge in Washington agreed and blocked her firing, noting that unproven allegation of mortgage fraud occurred before she was appointed to the Federal Reserve.

In defiance of his own health officials, he promoted unproven treatments such as hydroxychloroquine.

Both NHS and private fertility clinics must stop offering unproven treatments that don't help people have children, new official guidelines say.

Much of the technology is still "unproven and the timeline of its capabilities is still unclear", cautions Matthew Funaiole from CSIS's China Power Project.