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Hematologist discovers, names the 'Toms River' blood mutation in N.J. family
Date:6/16/2011

A newborn described as a "happy blue baby" because of her bluish skin color but healthy appearance made a small mark in medical history when one of her physicians discovered something new in her genesthe hemoglobin Toms River mutation.

Scientists have identified hundreds of mutations in genes that carry instructions for producing hemoglobinthe four-part protein that carries oxygen in everyone's red blood cells. By tradition, whoever discovers a mutation in hemoglobin genes names it after the hometown of the patient, said pediatric hematologist Mitchell J. Weiss, M.D., Ph.D., of The Children's Hospital of Philadelphia.

Weiss and colleagues published a brief report on the mutation in the May 12 issue of the New England Journal of Medicine. He collaborated with biochemist John S. Olson, Ph.D., of Rice University.

Fortunately, this particular mutation, which causes blue coloration (cyanosis) and anemia, has only mild, transient effects, and disappeared within a few months of birth, as the baby's hemoglobin made a normal transition from fetal hemoglobin to a different form of hemoglobin found in older children and adults.

Often, the researchers at Children's Hospital follow a "bench to bedside" pathworking to translate scientific findings into treatments of benefit to children's health. "This was sort of a bedside-to-bench event, in which exploration of a patient's condition led us to better knowledge of biology," said Weiss, who has investigated hemoglobin disorders for much of his career in medicine.

Weiss added, "We started with an unusual case. The baby had a blue color, but otherwise appeared healthy. We were able to rule out more common, serious causes, such as heart or lung disease. Then we learned some family history when the grandmother mentioned that the child's father also had experienced temporary cyanosis as a newborn."

Weiss had a clinical DNA diagnostics lab at Children's Hospital, directed
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Contact: John Ascenzi
Ascenzi@email.chop.edu
267-426-6055
Children's Hospital of Philadelphia
Source:Eurekalert

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