ARTICLE
24 October 2018

USFDA Approval To Lumoxiti Is A New Treatment For Hairy Cell Leukemia

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S&A Law Offices

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The FDA granted the approval of Lumoxiti to AstraZeneca Pharmaceuticals.
United States Food, Drugs, Healthcare, Life Sciences

On September 13, 2018, the U.S. Food and Drug Administration approved Lumoxiti (moxetumomab pasudotox-tdfk) injection for intravenous use for the treatment of adult patients with relapsed or refractory Hairy Cell Leukemia (HCL) who have received at least two prior systemic therapies, including treatment with a purine nucleoside analog1. Lumoxiti is a CD22-directed cytotoxin and is the first of this type of treatment for patients with HCL.

The efficacy of Lumoxiti was studied in a single-arm, open-label clinical trial of 80 patients who had received prior treatment for HCL with at least two systemic therapies, including a purine nucleoside analog. The trial measured durable complete response (CR), defined as maintenance of hematologic remission for more than 180 days after achievement of CR. Thirty percent of patients in the trial achieved durable CR, and the overall response rate (number of patients with partial or complete response to therapy) was 75 percent.

The FDA granted this application Fast Track and Priority Review designations. Lumoxiti also received Orphan Drug designation, which provides incentives to assist and encourage the development of drugs for rare diseases.

The FDA granted the approval of Lumoxiti to AstraZeneca Pharmaceuticals.

About Hairy Cell Leukemia

HCL is a rare, slow-growing cancer of the blood in which the bone marrow makes too many B cells (lymphocytes), a type of white blood cells that fight infection. HCL is named after these extra B cells which look "hairy" when viewed under a microscope. As the number of leukemia cells increases, fewer healthy white blood cells, red blood cells and platelets are produced.

About Lumoxiti2

Lumoxiti (moxetumomab pasudotox) is a CD22-directed cytotoxin and a first-in-class treatment in the US for adult patients with relapsed or refractory hairy cell leukaemia (HCL) who have received at least two prior systemic therapies, including treatment with a purine nucleoside analog. Lumoxiti is not recommended in patients with severe renal impairment (CrCl ≤ 29 mL/min). It comprises the CD22 binding portion of an antibody fused to a truncated bacterial toxin; the toxin inhibits protein synthesis and ultimately triggers apoptotic cell death.

Footnotes

1 https://www.fda.gov/NewsEvents/Newsroom/PressAnnouncements/ucm620448.htm

https://www.astrazeneca.com/media-centre/press-releases/2018/us-fda-approves-lumoxiti-moxetumomab-pasudotox-tdfk-for-certain-patients-with-relapsed-or-refractory-hairy-cell-leukaemia.html

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