Scientists used patient-derived cells to model pyridoxine-dependent epilepsy (PDE-ALDH7A1) and found that dialing down an upstream enzyme (AASS) eased several stress signals in the cells, pointing to a potential new therapy direction.

A New “Upstream” Target for PDE-ALDH7A1: Turning Down Lysine Breakdown in Patient-Derived Brain Support Cells

From Cells to a Living Model: Mouse Evidence That Blocking AASS Can Lower “Toxic Load” in PDE-ALDH7A1

A mouse study tested whether inhibiting AASS (an enzyme upstream of ALDH7A1) can reduce multiple PDE-related metabolites in brain and other tissues, offering proof-of-principle for a new treatment strategy.

“Bridging the Gap” in Real Life: A PDE-ALDH7A1 Newborn Case Report from a Low-Resource Setting

A case report from Indonesia highlights how difficult it can be to recognize and manage PDE when testing and specialist resources are limited, and it points toward practical needs that could shorten time-to-diagnosis.

A neonatal case report describes early seizures with relapse and an eventual genetic confirmation of PDE-ALDH7A1, underscoring how quickly the early window can be missed without targeted suspicion. PDE is classically described as seizures that do not respond well to typical anti-seizure medications but can respond dramatically to pharmacologic doses of pyridoxine (vitamin B6). The […]

PDE in a Newborn: A Reminder That “Vitamin B6-Responsive” Seizures Still Need a Clear Diagnosis

When the Usual Genes Are Negative: A Complex Genome Case in a Child with True Pyridoxine Dependence

A genetics case report describes a child with long-standing pyridoxine-dependent seizures but no diagnosis on standard exome testing, later showing complex structural changes on deeper genome analysis.

Antisense Therapy for PDE: A New Way to Turn Down Lysine Metabolism “Upstream”

A commentary highlights antisense oligonucleotides (AONs) targeting AASS, aiming to reduce the buildup of toxic lysine-pathway metabolites that drive pyridoxine-dependent epilepsy (PDE-ALDH7A1).

A small case series reports three neonatal epilepsy cases linked to vitamin B6 metabolism genes, reinforcing that early recognition and the right confirmatory testing can change outcomes. Pyridoxine-dependent epilepsy (PDE) is rare, but it is one of the most important “don’t-miss” causes of neonatal seizures because treatment can be effective. This report adds three more […]

Three “Vitamin B6-Dependent” Newborn Seizure Stories: Why the Gene (ALDH7A1 vs PNPO) Matters

When PDE Looks Like “Mitochondrial Disease”: A Case with Lactic Acidosis, Rhabdomyolysis, and Hyperammonemia

A report of PDE-ALDH7A1 shows how early metabolic lab abnormalities can mimic other disorders, and how targeted biomarkers can quickly point back to a treatable B6-pathway epilepsy.

The “Saccharopine Pathway” and a New Drug Target: Why LKR (AASS) Is on Researchers’ Radar for PDE

A review explains two lysine-breakdown routes in the body and argues that reducing flux through the saccharopine pathway could be therapeutic for PDE-ALDH7A1 and related disorders.

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