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Non-invasive bioenergetic tests may be useful biomarkers to assess disease activity in patients with different types of porphyria, a study says. The study, “Feasibility of cellular bioenergetics as a biomarker in porphyria patients,” was published in Molecular Genetics and Metabolism Reports. Porphyrias are a group of genetic…

Alnylam Pharmaceuticals has completed its submission of a new drug application (NDA) to the U.S. Food and Drug Administration (FDA), seeking the approval of givosiran for the treatment of acute hepatic porphyria (AHP). Givosiran, also known as ALN-AS1, is an investigational RNA-based therapy designed to…

Patients with acute hepatic porphyria (AHP) who suffer from recurrent attacks also experience significant chronic symptoms between attacks, according to results of a new study. The study, “­­Disease Manifestations of Patients with Recurrent Acute Hepatic Porphyria (AHP) and Daily Life Impacts in EXPLORE International, Prospective, Natural History Study,” was…

People with acute hepatic porphyria (AHP), with moderate to severe symptoms, have a deficiency in mitochondrial function — meaning that their cells’ “power plants” don’t work properly,  according to a pilot study. The study titled, “Pilot study of mitochondrial bioenergetics in subjects with acute porphyrias,” appeared…

With 250 rare diseases newly identified every year, scientists can barely keep up — even as the healthcare system fails millions of Americans whose rare diseases have already been diagnosed. That’s the warning from Christopher P. Austin, MD, director of the National Center for Advancing Translational Studies (NCATS) at…

Treatment with investigational RNA-based therapy givosiran can safely reduce the annual incidence of acute hepatic porphyria (AHP) attacks, according to final results from a Phase 3 clinical trial. These positive results from the ENVISION trial are intended to support the application for regulatory approval that givosiran’s manufacturer Alnylam Pharmaceuticals is planning…

Patients with porphyria cutanea tarda have higher risks of developing liver and other types of cancer and of dying prematurely compared to individuals from the general population, a study says. The findings of the study, “Porphyria cutanea tarda increases risk of hepatocellular carcinoma and premature death: a nationwide…

Researchers identified two previously unknown mutations in the coproporphyrinogen oxidase (CPOX) gene as the underlying cause of a rare form of hereditary coproporphyria, called harderoporphyria, in a 78-year old man. The study, “Harderoporphyria: Case of lifelong photosensitivity associated with T compound heterozygous coproporphyrinogen oxidase (CPOX) mutations“ was published in the…

A case involving a patient with erythropoietic protoporphyria (EPP) accompanied by liver damage highlights the need for increased awareness of porphyria among doctors making diagnoses, a case study reports. The case study, “Diagnosis of erythropoietic protoporphyria with severe liver injury: A case report,” was published in World…

Prophylactic (preventive) treatment with heme reduces the frequency of acute attacks, improving the quality of life and reducing healthcare costs of patients with acute intermittent porphyria, a study has found. The study, “Benefits of prophylactic heme therapy in severe acute intermittent porphyria,” was published in Molecular Genetics and…