Rare but dangerous blood clotting associated with that vaccine as well as AstraZeneca’s had a genetic cause, according to a new paper.

Researchers identify genetic mutation in small group of people who developed the serious disorder after receiving the AstraZeneca or Johnson & Johnson vaccine.

When reports of rare but severe blood clots emerged after Johnson & Johnson’s COVID vaccine, they threatened to overshadow an otherwise successful immunization campaign and left scientists searching ...

For men with hemophilia B, receipt of gene therapy comprising an infusion of etranacogene dezaparvovec results in sustained endogenous factor IX expression and low annualized bleeding rates over five ...