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Updated: Aug 2, 2026

Culturing and Measuring Fetal and Newborn Murine Long Bones
Published on: April 26, 2019
Homozygous achondroplasia with survival beyond infancy
Insights
Homozygous achondroplasia is typically lethal in newborns. However, this study reports three infants with this condition who survived infancy, suggesting aggressive treatment may improve survival and quality of life.
Area of Science:
- Genetics
- Pediatrics
- Skeletal Dysplasias
Background:
- Homozygous achondroplasia is a severe genetic disorder.
- It is characterized by extremely shortened limbs and a large head.
- Previously considered uniformly lethal in the neonatal period.
Observation:
- Three infants born to achondroplastic parents were identified as homozygous for achondroplasia.
- These infants survived beyond the typical neonatal period.
Findings:
- Two of the three infants died suddenly at 37 and 33 months of age.
- The third infant survived to 29 weeks of age.
- This challenges the notion of uniform lethality.
Implications:
- Aggressive treatment strategies may improve survival rates for homozygous achondroplasia.
- Improved survival could lead to a better quality of life for affected individuals.
- Further research is needed to establish optimal treatment protocols.
Abstract:
Homozygous achondroplasia has been thought to be uniformly lethal in the neonatal period. We describe three children, born to achondroplastic parents, who were homozygous for this disorder but who survived beyond early infancy. Two died suddenly at 37 and 33 mo; the third survives at 29 wk. At least in some instances aggressive treatment may allow others with this condition to survive with a reasonable quality of life.
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