"Hematopoietic stem cell (HSC) transplantation (HSCT), also known as bone marrow transplantation, was established as an effective treatment for SCID by the 1980s. However, without a family history or an astute clinician familiar with this rare disease, infants frequently died prior to diagnosis and transplantation."

https://journals.aai.org/jimmunol/article-abstract/210/3/219/237664/Early-Is-the-Key-for-Treatment-of-Severe-Combined?redirectedFrom=fulltext