EP 239: What long-read sequencing reveals about Alzheimer’s and ALS with Paul Valdmanis

EP 239: What long-read sequencing reveals about Alzheimer’s and ALS with Paul Valdmanis

by Sano Genetics

Life & Natural Systems Medicine & Health MFPre-clinical medicine: basic sciencesMFNMedical genetics
🎙 Sano Genetics 👥 942 📅 May 14, 2026 ⏱ 44 min 👁 80 📄 expert opinion 🧭 2026-08-16
Available in: English (current) Français

Keywords

long-read sequencingAPOE4Alzheimer's diseaseALScryptic splicing

Summary

In this episode of The Genetics Podcast, host Patrick Short interviews Dr. Paul Valdmanis, an associate professor at the University of Washington. They discuss recent research using long-read sequencing to uncover hidden genetic variation in Alzheimer’s disease and ALS. Key topics include a protective variant near APOE that reduces Alzheimer’s risk in individuals of African ancestry, the role of rare PSEN1/PSEN2 variants, and the discovery of cryptic splicing events in sporadic Alzheimer’s cases. The conversation also covers disease-specific mechanisms in ALS versus Alzheimer’s, precision therapies, and challenges in gene therapy delivery to the brain. Valdmanis highlights the importance of long-read sequencing in identifying structural variants and tandem repeat expansions missed by conventional methods. The episode concludes with insights into future therapeutic strategies and the potential for targeted treatments based on genetic subtypes.

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Critical Evaluation

Value of the Information & Strength of the Argument

The podcast provides valuable insights into the application of long-read sequencing in neurodegeneration research. Valdmanis presents compelling evidence from his studies, including the protective APOE variant and cryptic splicing in PSEN2, and argues for the importance of population-specific genetic analysis. The discussion is well-structured, with clear explanations of complex concepts, and the argumentation is solid, grounded in published research and personal expertise.

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Title / Content Match

The title accurately reflects the content, which focuses on long-read sequencing applications in Alzheimer's and ALS research.

Quality & Reliability

8/10

The podcast features a leading researcher discussing peer-reviewed studies, with references to specific publications. The information is technically accurate and well-contextualized, though presented as an informal discussion rather than a formal review.

Chapters

Cited Sources

  • APOE study — Discussed as the main study on the protective APOE variant.
  • Ancestry study — Referenced in relation to ancestry-specific APOE4 risk.

Concurring Sources

  • Nature Communications APOE study — Directly supports the main findings discussed.
  • Science ancestry study — Supports the discussion on ancestry-specific APOE4 risk.

Contribution & Novelties

The episode offers a unique perspective on how long-read sequencing can uncover previously missed genetic variants in neurodegeneration, particularly the protective APOE variant and cryptic splicing events. It bridges Alzheimer’s and ALS research, highlighting shared mechanisms and potential therapeutic targets.

Pour aller plus loin :

  • Long-read sequencing — Provides background on the technology discussed.
  • APOE4 — Details the gene and its role in Alzheimer’s risk.
  • Cryptic splicing — Explains the concept of cryptic exons and splicing regulation.

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Radar Profile

The radar profile shows high scores across all dimensions, indicating a well-rounded and reliable scientific discussion. The podcast excels in providing detailed and accurate information, with strong technical depth and credibility.

Reliability 8/10