multiple myeloma
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The US Food and Drug Administration (FDA) has granted fast track designation to selinexor for the treatment of patients with penta-refractory multiple myeloma (MM).
The patients must have received at least 3 prior lines of therapy that included an alkylating agent, a glucocorticoid, bortezomib, carfilzomib, lenalidomide, pomalidomide, and daratumumab.
In addition, the patients must have disease that is refractory to at least 1 proteasome inhibitor, at least 1 immunomodulatory agent, glucocorticoids, daratumumab, and the patients’ most recent therapy.
“The designation of fast track for selinexor represents important recognition by the FDA of the potential of this anticancer agent to address the significant unmet need in the treatment of patients with penta-refractory myeloma that has continued to progress despite available therapies,” said Sharon Shacham, PhD, founder, president, and chief scientific officer of Karyopharm Therapeutics Inc., the company developing selinexor.
The FDA’s fast track drug development program is designed to expedite clinical development and submission of new drug applications for medicines with the potential to treat serious or life-threatening conditions and address unmet medical needs.
Fast track designation facilitates frequent interactions with the FDA review team, including meetings to discuss all aspects of development to support a drug’s approval, and also provides the opportunity to submit sections of a new drug application on a rolling basis as data become available.
About selinexor
Selinexor (formerly KPT-330) is a first-in-class, oral selective inhibitor of nuclear export compound.
Selinexor functions by binding with and inhibiting the nuclear export protein XPO1 (also called CRM1), leading to the accumulation of tumor suppressor proteins in the cell nucleus. This reinitiates and amplifies their tumor suppressor function and is believed to lead to apoptosis in cancer cells while largely sparing normal cells.
Selinexor is currently being evaluated in several clinical trials across multiple cancer indications.
In the phase 2 STORM trial, researchers are testing selinexor in combination with low-dose dexamethasone for patients with penta-refractory MM. Karyopharm Therapeutics plans to report top-line data from this study at the end of this month.
Trials of selinexor were placed on partial clinical hold in mid-March last year due to a lack of information about serious adverse events. However, the hold was lifted for trials of patients with hematologic malignancies at the end of that same month.