Kendric Cromer, 12, is among the first patients to be treated with gene therapy just approved by the F.D.A. that many other patients face obstacles to receiving. Kendric Cromer, 12, is among the first patients to be treated with gene therapy just approved by the F.D.A. that many other patients face obstacles to receiving. Sickle Cell Anemia, Genetic Engineering, Therapy and Rehabilitation, Cromer, Kendric, Drugs (Pharmaceuticals), Bluebird Bio Inc, Children’s National Medical Center NYT > Science