Clinical Neurological Society of America

Clinical Proceedings

Acute Intermittent Porphyria

Published November 2025

An Overlooked but Treatable Inherited Neuropathy

Acute intermittent porphyria (AIP) is a rare genetic disorder resulting from the deficiency in one of the enzymes in the heme biosynthetic pathway, leading to the accumulation of neurotoxic heme precursors.1 AIP is one of four acute hepatic porphyrias.

Expert panel

Mohamed Kazamel, MD (Chair) · Richard Andrews, MD · Manisha Balwani, MD, MS, FACMG · Eddy Lang, MD · Rachana K. Gandhi Mehta, MD, MBBS · Bruce Wang, MD