Why the study?
Newborn screening does not eliminate the need for diagnostic testing in routine practice because adolescents and adults with milder phenotypes may present after symptom onset, risking diagnostic delay.
Does a single-tube nested PCR (STNPCR) method enable detection of homozygous SMN1 deletions in symptomatic patients with suspected SMA?
Population
Proof-of-concept cohort evaluated using dried blood spot samples
Design
Proof-of-concept study
Key result
A single-tube nested PCR method demonstrated preliminary technical feasibility for detecting homozygous SMN1 deletions in dried blood spot samples from a proof-of-concept cohort.
Authors
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Supports further STNPCR validation for SMA; leaves open clinical adoption in symptomatic patients.
Does a single-tube nested PCR (STNPCR) method enable detection of homozygous SMN1 deletions in symptomatic patients with suspected SMA?
A novel single-tube nested PCR method shows preliminary feasibility for detecting SMN1 deletions in suspected SMA patients, potentially aiding diagnosis outside of newborn screening.
Kosaka et al. (2026) studied Spinal muscular atrophy (SMA). Single-tube nested PCR (STNPCR) method was evaluated on Detection of homozygous SMN1 deletions. A single-tube nested PCR method demonstrated preliminary technical feasibility for detecting homozygous SMN1 deletions in dried blood spot samples from a proof-of-concept cohort.