New study identifies common abnormal physical features in babies born to mothers who used fentanyl

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"Babies born to mothers who used fentanyl during pregnancy displayed similar facial and musculoskeletal abnormalities that suggest the emergence of a novel syndrome, according to research published in the journal Genetics in Medicine Open. ..."

"A novel syndrome was suspected in individuals sharing short stature, microcephaly, distinctive facial features, and congenital anomalies. We enrolled 6 patients in an institutional review board approved study and evaluated medical history, findings, facial photographs, and test results across this original cohort. Four additional cases with similar findings were contributed by clinicians from outside institutions, bringing the number of reported cases to 10 and supporting the existence of this novel syndrome.

The 6 individuals enrolled into the institutional review board approved study shared microcephaly, short stature, and distinctive facial features. Congenital malformations included cleft palate, talipes equinovarus or rocker bottom feet, and chordee or hypospadias. Short, broad thumbs, single palmar crease, and mild 2,3 toe syndactyly were present. A hypoplastic corpus callosum was noted in 3 of 5 with appropriate evaluation. Their growth and physical findings were suggestive of Smith-Lemli-Opitz syndrome. Biochemical studies shortly after delivery indicated abnormalities in the cholesterol metabolism pathway that subsequently resolved. No shared genomic or genetic cause was identified. All individuals were born after a pregnancy complicated by prenatal exposure to nonprescription opioids, particularly fentanyl, suggesting fentanyl as a teratogen.

Prenatal fentanyl exposure possibly interfered with cholesterol metabolism, giving rise to findings resembling Smith-Lemli-Opitz syndrome. This novel syndrome is clinically recognizable. Four additional cases contributed clinically shared similar findings, increasing the number of cases to 10 and supporting a novel syndrome associated with prenatal fentanyl exposure. Assessment of Shepard and Bradford Hill criteria could be consistent with fentanyl as teratogen, though caution is necessary before assigning causality and data replication is needed."

New study identifies common physical features in babies born to mothers who used fentanyl

A novel syndrome associated with prenatal fentanyl exposure (open access)

Figure 1Facial photographs of Individuals 1-6 (A-F) as used in the GestaltMatcher analysis. Below each image are a lateral facial view, a hand, and a foot photo of the respective individual.