KL1333: Blockbuster candidate heading to registrational study
Project status: Phase 1a/b completed
KL1333 is currently being evaluated in patient studies and has been granted orphan drug designation in both the United States and Europe. Abliva intends to start a registrational clinical Phase 2/3 efficacy study during 2021.
PMD target population: MELAS-MIDD and KSS-CPEO
The KL1333 project is in clinical development stage intended to document the use for chronic oral treatment of primary mitochondrial disorders, in particular MELAS-MIDD spectrum disorders, mainly caused by the mutation m.3243A>G in the mitochondrial DNA (mtDNA) and affects about 35 in 1,000,000 people. An additional group is KSS-CPEO spectrum disorders caused by a deletion of a large part of mtDNA which affects 15 in 1,000,000. Common symptoms include fatigue and myopathy (muscle weakness).
Mechanism of action: NAD⁺ modulation
KL1333 is a potent modulator of the cellular levels of NAD+, a central co-enzyme in the cell’s energy metabolism. KL1333 has in preclinical models been demonstrated to increase mitochondrial energy output, have long-term beneficial effects on energy metabolism, strengthen muscle function and improve biomarkers of mitochondrial disease. KL1333 has been in-licensed from Yungjin Pharm, a Korean pharmaceutical company.
NV354: Unique therapeutic approach heading to clinical development
Project status: Preclinical safety studies ongoing
NV354 undergoes preclinical pharmacology and safety studies. The goal is to complete regulatory documentation during 2021 to support clinical entrance.
PMD target population: Leigh syndrome, MELAS, and LHON
One of the most common causes of mitochondrial diseases relates to Complex I dysfunction, i.e. when energy conversion in the first of the five protein complexes in the mitochondrion that are essential for effective energy conversion does not function normally. This is apparent in disorders including Leigh syndrome, MELAS, or LHON.
NV354 is developed for a chronic oral treatment of Leigh syndrome, a severe primary mitochondrial disease that usually debuts at one to two years of age. The disease is fatal and children usually die before age 5. Symptoms include developmental delay, psychomotor regression, and hypotonia. There are currently no approved medicines.
The unique mechanism of action and high brain uptake may be utilized to develop NV354 for the treatment of MELAS in children and adolescents with neurological symptoms, and for the treatment of LHON. MELAS is a serious disease with symptoms such as muscle weakness, diabetes, fatigue, epilepsy, other severe neurological effects, and shortened life span. LHON is a disease that causes sudden severe permanent visual impairment and can lead to blindness on both eyes.
Mechanism of action: Energy replacement
The project is based on an Abliva innovation in which the body’s own energy substrate, succinate, is made available in the cell via a prodrug technology. A prodrug is an inactive drug that is activated first when it enters the body by the transformation of its chemical structure. Succinate bypasses the dysfunctional Complex I and acts directly on Complex II, to replace the energy lost. NV354 has shown favorable properties in tolerability, oral bioavailability, plasma stability and organ delivery, specifically to the brain. The drug candidate is intended for long-term oral treatment.
Abliva’s discovery projects focus on deeper understanding of the mechanisms for our unique chemistry platforms, and the development of next-generation compounds for primary mitochondrial diseases.
Abliva develops medicines for the treatment of primary mitochondrial diseases. These congenital, rare and often very severe diseases occur when the cell’s energy provider, the mitochondria, do not function properly. The portfolio includes projects at different stages and ranges from early discovery phase to clinical phase.
Primary mitochondrial diseases
Primary mitochondrial diseases are metabolic diseases that affect the cells’ abili to convert energy. The disorders can manifest differently depending on the organs affected and have historically been viewed as clinical syndromes,