Novel surfactant C variant c.325-47_374del without response to hydroxychloroquine treatment.

Pathogenic variants of SP-C, which cause various lung diseases with varying ages of onset, are inherited in an autosomal dominant manner or appear de novo as new mutations. We present a case of fatal respiratory failure in a female infant. Genetic analysis confirmed an intragenic deletion encompassing exon 4 in the SFTPC gene, starting in the intron region before exon 4, extending into the exon 4 and portion, in a heterozygous state. This variant, c.325-47_374del, in the SFTPC gene has not yet been described in the literature. Despite an experimental therapy with hydroxychloroquine, the baby girl died on Day 162.