How is neutropenia treated in cartilage-hair hypoplasia (CHH)?

Updated: Aug 06, 2019
  • Author: Alan P Knutsen, MD; Chief Editor: Harumi Jyonouchi, MD  more...
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Answer

Treatment of neutropenia with granulocyte colony-stimulating factor (G-CSF) has been successful in patients with cartilage-hair hypoplasia. [27] Neutropenia is a common feature in individuals with cartilage-hair hypoplasia, occurring as frequently as 27% in a group of 79 Finnish children. The typical mechanism is maturation arrest, but autoimmune neutropenia also occurs. The severity of the neutropenia correlates with the severity of the immunodeficiency and, therefore, contributes to the increased frequency and severity of infections in patients with cartilage-hair hypoplasia. Ammann et al reported that a 3-year-old Japanese boy with cartilage-hair hypoplasia and autoimmune anti-FcgRIIIb (NA 1/2) neutropenia was treated with G-CSF, which improved the boy’s peripheral neutrophil numbers and reduced recurrent bacterial infections. [27]


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