In a single case report, researchers identified a new gene variant in the NSF gene that may be linked to a rare developmental and epileptic encephalopathy. The case involved a fetus with multiple prenatal anomalies, including increased nuchal fold thickness, left clubfoot, severe anemia with cardiac enlargement, and hepatosplenomegaly. Genetic testing found a novel de novo heterozygous missense variant, c.1055 A>G, p (Asn352Ser), in the D1 domain of the NSF gene. This variant was classified as likely pathogenic according to ACMG/AMP criteria.
The findings are based on only one case, so the evidence is very limited. This is a case report, not a large study, and it cannot prove that this variant causes the condition. However, it suggests that NSF variants might be considered when doctors encounter complex fetal syndromes with neurological and hematological abnormalities.
No safety concerns were reported in this case, but the fetus had severe anemia, which was a notable feature. The main limitation is the small sample size, as only one fetus was studied. Therefore, more research is needed to confirm the role of this variant.
For readers, this report is an early step in understanding a rare condition. It does not change current medical practice, but it may help guide future research and genetic counseling. If you have questions about genetic testing or prenatal findings, talk to your doctor.
