OHSU reports on plans to launch CoA-Z trial with help from grant

OHSU logoNovember 2019

NBIA researchers Drs. Susan Hayflick and Penny Hogarth recently announced that, thanks to added help from a federal grant, they will soon launch a clinical trial to test a compound, CoA-Z, in individuals with PKAN, a common form of NBIA.

The grant is from the Eunice Kennedy Shriver National Institute of Child Health and Human Development, part of the National Institutes of Health.

The CoA-Z compound will be tested in the U.S. and Canada to see if it corrects a metabolic process involved in producing coenzyme A in individuals with PKAN.

To prepare for the trial, the researchers recently did a study in a small number of PKAN adults and children who received CoA-Z under supervision at the Oregon Health & Sciences University, where the Hayflick and Hogarth Team is located. The information gained from this study was used to refine the dosing plan for the trial and help determine when blood samples should be collected.

The preliminary testing confirmed that CoA-Z was safe for PKAN individuals to take over the short period of the study.

In addition to the NIH grant that will fund the clinical trial over a period of several years, $2 million in donations has been raised from a variety of sources over the past two years to support the manufacturing and formulation of CoA-Z, database development and other costs not covered by the NIH grant. NBIA families held many fundraisers, with proceeds going to the nonprofit Spoonbill Foundation founded by Hayflick and Hogarth. Funds also came from Stichting Lepelaar, a nonprofit Drs. Ody Sibon and Hans Hektor set up in the Netherlands, the Dutch Foundation for Rare Diseases, and $50,000 from the NBIA Disorders Association.

The OHSU team led by Suh Young Jeong, PhD, in partnership with Sibon's group, recently published an article in the journal EMBO Molecular Medicine on CoA-Z, titled "4'-Phosphopantetheine corrects CoA, iron, and dopamine metabolic defects in mammalian models of PKAN." The article was based on a mouse model of PKAN. The researchers say this mouse is important because it is the first to show abnormal iron accumulation in the brain, as well as other PKAN changes.

These mice did not have any dystonia, but they had biochemical changes of PKAN in the same brain region as in people with PKAN. According to the article, after taking 4'-phosphopantetheine by mouth for two weeks, all of the PKAN biochemical changes in mouse brain improved.

Researchers also tested skin cells from people with PKAN, and the same biochemical changes were found. When the cells were bathed in 4'-phosphopantetheine, the changes resolved. The mouse experiments showed that 4'-phosphopantetheine is not degraded in the gastrointestinal tract and that it can cross the blood-brain barrier.

Sibon's group published a separate paper in the same journal issue titled, "CoA-dependent activation of mitochondrial acyl carrier protein links four neurodegenerative diseases," that reveals important insights into the biochemical changes in PKAN and related disorders. The researchers believe these two publications provide a solid foundation for launching studies of CoA-Z in people.

Information for this article was taken from http://nbiacure.org/coaz-clinical-trial/ where you can go for more information and updates on the clinical trial.



Clinical trial of Retrophin drug fails; Shows no benefit for PKAN patients

August 2019

A much-anticipated drug therapy has failed to show any benefit for individuals affected with PKAN, or Pantothenate Kinase-Associated Neurodegeneration, one of the most common forms of NBIA.

The drug’s maker, Retrophin Inc., announced the disappointing results Aug. 22 for its Phase 3 Fosmetpantotenate Replacement Therapy, or FORT, study.

Seventy-eight PKAN individuals had completed the 24-week randomized, double-blind study, meaning that neither the patients nor the doctors knew who was randomly selected to get the drug or the placebo. At the end of the study, 76 patients decided to participate in the open-label program in which all received the drug.

Although the drug, Fosmetpantotenate, was observed to be generally safe and well-tolerated, the study found that it did not meet its primary or secondary endpoints, or outcome measures.

First, the study found no differences between those who received the drug and those who got the placebo. That determination was based on the extent to which individuals improved over the 24-week trial, based on a scale that measures activities of daily living, such as walking, eating and dressing. Those measures were specifically adapted for PKAN individuals using Part II of the comprehensive and widely referenced Unified Parkinson’s Disease Rating Scale.

Second, the study found no measurable change on the same scale’s Part III score, which evaluates motor function, including slowness, stiffness and balance.

No data suggested that a longer course of treatment would change the outcomes, nor were any differences seen between classic and later-onset PKAN individuals taking part in the trial.

“We are very disappointed in the topline results from the FORT Study, particularly because we have seen the devastating impact of PKAN on patients and their families, and a significant unmet need remains with no approved treatment option,” said Retrophin CEO Eric Dube, Ph.D. "We would like to thank the patients, their caregivers, study investigators and our employees, whose dedication made this study possible.”

The study gathered a significant amount of data, which is still being analyzed. Retrophin plans to present its findings at scientific meetings in the fall. It also will publish the findings in a peer-reviewed journal. Company officials said they hope the data will help inform future clinical studies for treating PKAN.



Deferiprone trial results produce positive findings for some with PKAN

August 2019

The long-awaited results from the first international clinical trial for NBIA — testing deferiprone in individuals with PKAN — are in.

They show that the iron-chelating drug slowed the progression of the disorder in older patients with a later-onset, or atypical, form of PKAN, but did not have a similar benefit for younger patients with classic PKAN, which starts in early childhood.

In addition to those findings, the study showed that the drug successfully reduced the amount of accumulated iron in the brain for PKAN individuals, regardless of onset age.

PKAN, or Pantothenate Kinase-Associated Neurodegeneration, and all other NBIA disorders share iron accumulation in the globus pallidus structure of the brain. It remains unclear, however, whether excess iron causes NBIA or is brought on by some other problem.

The results of the trial, which was funded by a European Union grant titled Treat Iron-Related Childhood-Onset Neurodegeneration, or TIRCON, were presented at the Tenth International NBIA Family Conference held May 30 to June 2 in Charleston, S.C. The findings were then published in the July issue of the medical journal, Lancet Neurology.

The lead investigator of the trial in the United States, Dr. Elliott Vichinsky of the University of California, San Francisco Benioff Children’s Hospital in Oakland, discussed the results at the conference. He said that older and younger PKAN individuals showed improvement with deferiprone in dystonia of the lower face and lower legs, as well as in cognitive functioning, especially memory. But the benefit in the younger children, who tend to have a faster-moving, more severe form of PKAN, “wasn’t statistically significant,” he said.

The 18-month trial, which ran from 2012 to 2015, involved 88 patients from the United States, Germany, Italy and England. The trial met the gold standard for research. It was randomized, with some patients getting deferiprone orally and others getting a placebo. Afterward, the trial was extended another 18 months, and the drug was made available to everyone who took part in the trial.

“The drug was well-tolerated, and the safety profile was very good,” Vichinsky told families at the conference.

But because the study did not meet a key goal — showing a statistically important improvement from deferiprone in all age groups — the U.S. Food and Drug Administration hasn’t yet approved it for PKAN. Consequently, Vichinsky encouraged interested families to contact the FDA to advocate for its approval.

To read the full article:

Published Article


To see his presentation, go to the YouTube channel for the NBIA Disorders Association conference here:

Watch Video



Two new grants awarded to BPAN researchers in January

April 2019

Two new BPAN grants were awarded in January from the University of Pennsylvania, with crucial input from the NBIA Disorders Association.

In both cases, the grants will enable researchers to build on their previous studies of BPAN, or Beta-Propeller Associated Neurodegeneration, which is fast becoming one of the most common forms of NBIA.

The money for the grants comes from last year’s Million Dollar Bike Ride held in May 2018 by the Orphan Disease Center at the University of Pennsylvania. For the second year in a row, BPAN family supporters rode and managed to qualify for a matching grant of $50,000 from UPenn. Because the riders raised slightly more than the required match, one-year grants of $51,020 each were awarded for the two new BPAN studies.

Our organization writes the request for proposals, and members of our Scientific & Medical Advisory Board review grant applications. The University of Pennsylvania manages the grants, and sends us copies of the scientific reports that grant recipients provide.

Hong Zhang
Dr. Hong Zhang of the Chinese Academy of Sciences in Beijing, has received a $51,020 grant for BPAN research. He is currently a visiting professor at the University of Massachusetts Medical School.

One new grant will go to Dr. Hong Zhang, who received a grant from the 2017 Million Dollar Bike Ride. Zhang will be able to continue his studies into the functions of the mutated WDR45 gene, which causes BPAN. Zhang, a visiting professor at the University of Massachusetts Medical School and a researcher at the Institute of Biophysics, Chinese Academy of Sciences, in Beijing titled his newest project, “Mechanistic study of WDR45/45B and their binding partner ATG2 in the autophagy pathway of neural cells.”

What that means is Zhang will be studying the role of the protein WDR45 that’s made by the WDR45 gene that causes BPAN. He also will study WDR45B, the protein for the WDR45B gene that causes another neurodevelopmental syndrome characterized by intellectual disability, spastic quadriplegia, epilepsy and cerebral hypoplasia. Specifically, he’ll be looking at the impact these proteins have in the neural pathway for autophagy, the natural, multi-step process by which the body recycles or cleans out certain toxic materials to maintain proper functioning and stability.

Two PKAN grants awarded this year in collaboration with sister groups

April, 2019

Lauriel Earley
Dr. Lauriel Earley from the University of North Carolina - Chapel Hill, will work on a PANK2 gene therapy for the treatment of PKAN in her newly awarded grant.

Two new grants to study PKAN were awarded early this year by the NBIA Disorders Association in collaboration with two of our European sister organizations, AISNAF in Italy and Hoffungsbaum e. V. in Germany.

These grants mark the first time all three NBIA groups have teamed up to fund research projects.

The organizations received 12 proposals, with eight focusing on PKAN, three on BPAN and one on MPAN. All were evaluated by an International Scientific Advisory Board made up of scientists and clinicians with expertise in the field of rare, neurodegenerative diseases, including NBIA. In a second step, the projects deemed worthy of funding were shared with a Lay Review Board consisting of parents and patient representatives. The lay group had the final say on which projects would be funded.

The members selected two PKAN studies. No proposals to study BPAN or MPAN met the funding standards, so a new call for proposals for these two disorders went out in March.


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