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October 22, 2025International Journal of Neonatal ScreeningOpen Access

Validation on the First-Tier Fully Automated High-Throughput SMN1, SMN2, TREC, and RPP30 Quantification by Quadruplex Droplet Digital PCR for Newborn Screening for Spinal Muscular Atrophy and Severe Combined Immunodeficiency

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Authors

CMChloe Miu MakBiogen (United States)THTricia HoDuke UniversityMYM.-Y. YipPamela Youde Nethersole Eastern Hospital

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Implication

First-tier quadruplex ddPCR quantifies SMN1, SMN2, and TREC in newborns, indicating reliable detection and early intervention.

Key Points

  • The automated quadruplex ddPCR assay accurately quantifies SMN1 and SMN2 in newborns, providing crucial data for SMA treatment.
  • Precision of the ddPCR for SMN1 and SMN2 is less than 7% CV for ≥0 copies, ensuring reliability in newborn screening.
  • Sanger sequencing confirms all SMA cases with homozygous deletions while achieving precise TREC quantification crucial for SCID diagnosis.
  • This two-tiered diagnostic approach enhances screening accuracy for SMA and SCID, enabling timely treatment and parental guidance.

Cite This Study

Mak et al. (2025) studied this question.

synapsesocial.com/papers/68f83327d24b29c96948205ehttps://doi.org/10.3390/ijns11040097
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Also Consider

Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Newborn Blood Spot Screening Test Using Multiplexed Real-Time PCR to Simultaneously Screen for Spinal Muscular Atrophy and Severe Combined Immunodeficiency2014 · 87 citations
  2. 2Closing the Gap - Detection of 5q-Spinal Muscular Atrophy by Short-Read Next-Generation Sequencing and Unexpected Results in a Diagnostic Patient Cohort2023 · 9 citations
  3. 3Newborn screening for spinal muscular atrophy in Germany: clinical results after 2 years2021 · 167 citations
  4. 4Technical feasibility of newborn screening for spinal muscular atrophy by next-generation DNA sequencing2023 · 16 citations