GB2064 Shows Reduction in Fibrosis of the Bone Marrow in Patients with Myelofibrosis, Validating LOXL2 as a Clinical Fibrosis Target
Professor Srdan Verstovsek,
All four patients who experienced a > 1-grade reduction in fibrosis score also showed stable hematological parameters (hemoglobin, white blood cell count, and thrombocytes) and stable spleen volume over the six month treatment period, and none required transfusion. Two of these patients have entered the extension phase of the study due to the clinical benefit of GB2064 as evaluated by the treating physician.
Professor
GB2064 has shown a generally acceptable tolerability profile to date. Sixteen patients have been dosed with GB2064 in the MYLOX-1 trial, of which eight patients have completed or continue to receive treatment and eight patients have either discontinued treatment as a result of an adverse event or disease progression. The most commonly observed treatment-related adverse events were gastrointestinal in nature and were manageable in most patients with standard therapy. In the five patients who completed at least six months of treatment with GB2064, there were no treatment-related serious adverse events, while in the entire trial population, the only possibly treatment-related serious adverse event was a case of fall.
Dr. Hans Schambye, President and Chief Executive Officer of
Dr. Schambye continued, “With respect to our other ongoing clinical programs, we anticipate announcing top-line results from our Phase 1b/2a GULLIVER-2 trial for liver cirrhosis in the coming weeks.”
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About MYLOX-1 Trial
The MYLOX-1 clinical trial is an ongoing Phase 2, open-label, single-arm study in myelofibrosis patients who are ineligible, refractory or intolerant to JAK inhibitor therapy. These patients have a progressive disease with poor quality of life, high mortality rates, and very limited treatment options. Patients receive GB2064 orally at a dose of 1000mg twice daily for nine months and undergo bone marrow biopsies at the beginning of the trial and again at months 3, 6, and 9. The primary endpoint of the ongoing MYLOX-1 trial is an assessment of safety and tolerability, while secondary endpoints focus on measurements of bone marrow fibrosis and hematological parameters. Apart from evaluating the safety and tolerability of GB2064, a key objective of the MYLOX-1 trial is to evaluate the direct anti-fibrotic activity of GB2064 by blocking lysyl oxidase-like 2 (LOXL2) in an indication that allows for repeated tissue biopsies.
As part of the planned intermediate assessment,
As with many ongoing clinical trials in myelofibrosis,
About Myelofibrosis
Myelofibrosis is a hematological cancer that causes fibrosis of the bone marrow and disrupts the body’s normal production of blood cells, which can lead to multiple negative impacts and a significantly reduced quality of life and mortality. The bone marrow is destroyed by fibrosis, forcing out the production of blood components and aggravating symptoms, including anemia, thrombocytopenia, leukocytosis, and spleen enlargement. JAK inhibition is the current standard of care for patients with myelofibrosis; however, these therapies do not address the core of the underlying disease biology and have not shown a consistent effect on fibrosis, biomarkers of disease modification, or overall survival.
About LOXL2 and GB2064
GB2064, a potentially first-in-class, LOXL2 inhibitor candidate, is in development for the treatment of fibrotic diseases and cancer. LOXL2 is an enzyme that plays a key role in myelofibrosis and contributes to the fibrotic progression of the disease. LOXL2 catalyzes cross-linking of collagen, forming the backbone of fibrosis. The molecular target for GB2064 is LOXL2, an enzyme that plays a central role in the crosslinking of collagen in tissue fibrosis and is involved in multiple types of fibrotic diseases, including myelofibrosis. In contrast to previous attempts to inhibit LOXL2 with a monoclonal antibody, GB2064 is specifically designed to completely inhibit the LOXL2 enzymatic activity.
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Forward-Looking Statements
This press release contains forward-looking statements that involve a number of risks and uncertainties. Such forward-looking statements include statements about the enrollment and timing of availability of clinical trial data for the MYLOX-1 trial, including as a result of COVID-19; the safety and efficacy of GB2064; and Galecto’s plans, strategies and prospects for clinical development of its product candidates and pipeline. Such forward-looking statements include statements about Galecto’s focus, plans for clinical development, product candidates and pipeline. The words “may,” “will,” “could,” “would,” “should,” “expect,” “plan,” “anticipate,” “intend,” “believe,” “estimate,” “predict,” “project,” “potential,” “continue,” “target,” and similar expressions are intended to identify forward-looking statements, although not all forward-looking statements contain these identifying words. For such statements,
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Source: Galecto, Inc.