Disease-causing substrate

The term 'Disease-causing substrate' is a generic functional descriptor rather than a specific biological target such as a receptor, enzyme, or ion channel. It refers to a wide array of endogenous molecules—including lipids, carbohydrates, and misfolded proteins—that accumulate to pathological levels due to genetic mutations or metabolic imbalances, frequently seen in lysosomal storage disorders and neurodegenerative conditions [1]. For example, in Gaucher disease, the substrate glucosylceramide accumulates due to a deficiency in the enzyme glucocerebrosidase, leading to systemic organ damage [2]. In drug discovery, these substrates are typically the markers of pathology rather than the therapeutic targets themselves; interventions usually focus on inhibiting the upstream enzymes responsible for substrate synthesis or enhancing the activity of degradative pathways [3]. Because the term encompasses a chemically heterogeneous group of molecules across many unrelated diseases, it lacks the molecular specificity required for a definitive pharmacological profile. Consequently, it is classified as 'incorrect' in the context of specific drug-target mapping, as actionable targets must be defined by specific gene products or chemical entities to ensure therapeutic precision.

Other names

Pathogenic substrateToxic metaboliteAccumulated substrateMetabolic intermediate

Not applicable as this is a generic category rather than a specific molecular target.