We propose to continue and expand the clinical research and training programs of the Porphyrias Consortium (PC), a currently funded Consortium of the Rare Disease Clinical Research Network (RDCRN) that focuses on the inborn errors of heme biosynthesis, the porphyrias. The PC has brought together the complementary strengths of the senior porphyria experts at six regional centers;the American Porphyria Foundation (APF), the only US porphyria patient advocacy and support group;and biopharmaceutical companies interested in improving diagnosis and/or developing novel therapies for these diverse diseases. The Principal Investigator and Administrative Director will be Robert J. Desnick, PhD, MD, Icahn School of Medicine at Mount Sinai (MSSM) and Karl E. Anderson, MD, University of Texas Medical Branch, Galveston, respectively. The other four Consortium Directors are D. Montgomery Bissell, MD, University of California at San Francisco (UCSF);Joseph R. Bloomer, MD, University of Alabama at Birmingham (UAB);Herbert L. Bonkovsky, MD, Carolinas HealthCare System (CHS);and John Phillips, PhD, University of Utah (UoU). These porphyria experts form an interactive and interdisciplinary team of translational and clinical investigators who have active basic and clinical porphyria research programs, strong track records for training young investigators, and internationally recognized clinical expertise. For the past four years, they have worked as an effective team to accomplish the original objectives of the PC as documented in the progress reports for each project. The PC recruited over 450 patients in less than three years to the Longitudinal Study (LS) to document the natural history of each porphyria, and initiated six other clinical studies or trials, and a pilot/demonstration project. We will continue to enroll patients into the LS and other studies through the Contact Registry, APF and physician referrals, and the establishment of Outreach Clinics. In addition, we will continue training the next generation of porphyria experts, supported by $1.5 million in matching grants donated by patients and industry. New studies will focus on the acute hepatic porphyrias, including a project to identify safe new drugs and an in-depth observational study prior to clinical trials of Panhematin(r) and a novel RNA interference therapy. The pilot/demonstration program will include investigation of porphyria candidate modifier genes, Skype-based focus groups, and an exosome assay for hepatic ALAS1. These studies should lead to more effective management and treatment of these diseases.

Public Health Relevance

The hepatic and erythropoietic porphyrias are rare inborn errors of heme biosynthesis that are or unrecognized or misdiagnosed, and in need of improved and specific therapies. Their rarity has limited characterization of their clinical manifestations, natural histories and genotype/phenotype correlations. This Consortium brings together senior porphyria experts at six academic institutions, the APF, and industry to address these limitations by enrolling biochemically- and mutation-confirmed porphyria patients in the current and proposed clinical studies and trials. We also will continue to train porphyria clinicians and researchers.

Agency
National Institute of Health (NIH)
Institute
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
Type
Specialized Center--Cooperative Agreements (U54)
Project #
2U54DK083909-06
Application #
8765263
Study Section
Special Emphasis Panel ()
Program Officer
Sherker, Averell H
Project Start
2009-09-30
Project End
2019-08-31
Budget Start
2014-09-27
Budget End
2015-08-31
Support Year
6
Fiscal Year
2014
Total Cost
$1,250,000
Indirect Cost
$146,552
Name
Icahn School of Medicine at Mount Sinai
Department
Genetics
Type
Schools of Medicine
DUNS #
078861598
City
New York
State
NY
Country
United States
Zip Code
10029
Balwani, Manisha; Singh, Preeti; Seth, Anju et al. (2016) Acute Intermittent Porphyria in children: A case report and review of the literature. Mol Genet Metab 119:295-299
Brancaleoni, V; Balwani, M; Granata, F et al. (2016) X-chromosomal inactivation directly influences the phenotypic manifestation of X-linked protoporphyria. Clin Genet 89:20-6
French, Joshua B; Bonacini, Maurizio; Ghabril, Marwan et al. (2016) Hepatotoxicity Associated with the Use of Anti-TNF-α Agents. Drug Saf 39:199-208
Chen, Brenden; Solis-Villa, Constanza; Hakenberg, Jörg et al. (2016) Acute Intermittent Porphyria: Predicted Pathogenicity of HMBS Variants Indicates Extremely Low Penetrance of the Autosomal Dominant Disease. Hum Mutat 37:1215-1222
Naik, Hetanshi; Stoecker, Mikayla; Sanderson, Saskia C et al. (2016) Experiences and concerns of patients with recurrent attacks of acute hepatic porphyria: A qualitative study. Mol Genet Metab 119:278-283
Merkel, Peter A; Manion, Michele; Gopal-Srivastava, Rashmi et al. (2016) The partnership of patient advocacy groups and clinical investigators in the rare diseases clinical research network. Orphanet J Rare Dis 11:66
Medlock, Amy E; Shiferaw, Mesafint T; Marcero, Jason R et al. (2015) Identification of the Mitochondrial Heme Metabolism Complex. PLoS One 10:e0135896
Bissell, D Montgomery; Lai, Jennifer C; Meister, Raymond K et al. (2015) Role of delta-aminolevulinic acid in the symptoms of acute porphyria. Am J Med 128:313-7
Bergonia, Hector A; Franklin, Michael R; Kushner, James P et al. (2015) A method for determining δ-aminolevulinic acid synthase activity in homogenized cells and tissues. Clin Biochem 48:788-95
Bossi, Krista; Lee, Jingyun; Schmeltzer, Paul et al. (2015) Homeostasis of iron and hepcidin in erythropoietic protoporphyria. Eur J Clin Invest 45:1032-41

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