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the claim
Porphyrias are a group of genetic disorders caused by problems with how the body makes a substance called heme.
the verdict
SUPPORTED
the evidence backs this
Recorded sources
5 sources for · 0 against
Is it true that Porphyrias are a group of genetic disorders caused by problems with how the body makes a substance called heme?
Yes. Porphyrias are well-documented genetic disorders caused by enzymatic defects in the heme biosynthesis pathway, leading to the accumulation of heme precursors.
Verdict: SUPPORTED · 5 sources for, 0 against · Last checked
The analysis
The retrieved literature consistently confirms that porphyrias are a group of genetic and metabolic disorders caused by defects or mutations in enzymes involved in the biosynthesis of heme.
Evidence for · 5
Mutations in the erythroid-specific ALAS gene disrupt heme regulation and cause X-linked protoporphyria.
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EJ, F., J, C., GA, H., S, D., L, B., VN, U., JC, D., L, G., H, P., & GC, F. (2015). Human Erythroid 5-Aminolevulinate Synthase Mutations Associated with X-Linked Protoporphyria Disrupt the Conformational Equilibrium and Enhance Product Release.. doi.org. https://doi.org/10.1021/acs.biochem.5b00407
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More for · 4
HMBS is an enzyme directly involved in the heme biosynthesis pathway whose dysfunction relates to porphyria.
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H, S., M, S., M, T., T, M., M, I., M, T., Y, O., K, H., K, W., Y, H., & K, Y. (2021). Crystal structures of hydroxymethylbilane synthase complexed with a substrate analog: a single substrate-binding site for four consecutive condensation steps.. doi.org. https://doi.org/10.1042/bcj20200996
Porphyrias are described as rare genetic disorders caused by mutations in the heme biosynthesis pathway.
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I, M. & P, M. (2025). Acute hepatic porphyrias.. doi.org. https://doi.org/10.1097/j.pbj.0000000000000308
Porphyrias are defined as metabolic disorders caused by enzymatic defects in the heme biosynthesis pathway.
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TN, V., S, T., GM, J., U, N., TF, M., HW, L., I, A., D, G., & SN, T. (2026). Understanding the Clinical Spectrum of the Cutaneous and Acute Hepatic Porphyrias.. doi.org. https://doi.org/10.1007/s40257-026-01046-x
Acute intermittent porphyria is noted as a heme biosynthesis disorder caused by enzymatic problems.
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P, S., M, G. A., SA, H., H, A., M, H., & V, Z. (2026). Acute Intermittent Porphyria Triggered by COVID-19 Mimicking Guillain-Barré Syndrome: A Diagnostic Challenge.. doi.org. https://doi.org/10.1002/ccr3.72417
What does the evidence say?
The retrieved literature consistently confirms that porphyrias are a group of genetic and metabolic disorders caused by defects or mutations in enzymes involved in the biosynthesis of heme.
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