Promising Treatment for an Incurable, Deadly Polycystic Kidney Disease Being Developed

by Iswarya on  September 13, 2019 at 11:56 AM Clinical Trials News
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Autosomal dominant polycystic kidney disease (ADPKD), caused by a genetic disorder, can eventually lead to organ failure. Although the treatment options for ADPKD are limited, a new drug which is in early clinical trials shows promising results for the disease. The findings of the study are published in the journal Nature Communications.
Promising Treatment for an Incurable, Deadly Polycystic Kidney Disease Being Developed
Promising Treatment for an Incurable, Deadly Polycystic Kidney Disease Being Developed

The study shows an approximately 50 percent reduction in kidney size in afflicted mice following treatment. The drug is now in early clinical trials in human subjects, said Dr. Vishal Patel, Associate Professor of Internal Medicine at UT Southwestern and senior author of the study.

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"Once the kidneys have failed, the only options for survival are dialysis or a kidney transplant," Dr. Patel said. "A large percentage of ADPKD patients on dialysis die each year while waiting for a donated kidney."

The only drug currently approved to treat ADPKD, called Jynarque (generic name tolvaptan), carries the FDA's highest warning in its prescribing information, a box notifying prescribers and users of the possibility of "serious and potentially fatal liver injury."

The new treatment cooperatively developed at UT Southwestern and Regulus Therapeutics Inc., a biopharmaceutical company based in California, showed no evidence of toxicity in animals or in human cell tests, according to the study. It is preferentially delivered to kidneys rather than the liver after being administered, according to the Nature Communications study.

"We earlier showed that levels of a tiny RNA fragment called microRNA-17 are increased in models of ADPKD," Dr. Patel said. "MicroRNA-17 interferes with the normal function of other, beneficial RNAs, causing kidney cysts to grow. RGLS4326, as the new drug is called in development, works by blocking the harmful microRNA-17."

Early phase one clinical trial began last year, conducted by Regulus Therapeutics. The FDA has asked for additional toxicity information from animal testing before human trials can move to the next step, Dr. Patel said.

Source: Eurekalert

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