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Tenalisib receives orphan designation for CTCL

mycosis fungoides
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The US Food and Drug Administration (FDA) has granted orphan drug designation to tenalisib for treatment of cutaneous T-cell lymphoma (CTCL).

Tenalisib (formerly RP6530) is a dual PI3K delta/gamma inhibitor under development by Rhizen Pharmaceuticals SA.

The FDA previously granted tenalisib fast track and orphan drug designations for the treatment of peripheral T-cell lymphoma (PTCL).

Tenalisib has been investigated in a phase 1 trial of patients with relapsed/refractory PTCL and CTCL. Results from this trial were presented at the 10th Annual T-cell Lymphoma Forum in February.

The data included 55 patients—28 with CTCL and 27 with PTCL—who received varying doses of tenalisib. The maximum tolerated dose was an 800 mg daily fasting dose.

Fourteen PTCL patients were evaluable for efficacy, and 7 responded (50%) to treatment. Three patients had a complete response, and 4 had a partial response.

Eighteen CTCL patients were evaluable for efficacy. Eight patients responded (44%), all with partial responses.

In the entire cohort, treatment-related adverse events (AEs) of grade 3 or higher included transaminitis (20%), rash (5%), neutropenia (2%), hypophosphatemia (2%), international normalized ratio increase (2%), sepsis (2%), pyrexia (2%), and diplopia secondary to neuropathy (2%).

Four CTCL patients stopped tenalisib due to a treatment-related AE—transaminitis, sepsis, diarrhea, and diplopia secondary to neuropathy. One PTCL patient stopped treatment due to a related AE, which was transaminitis.

About orphan and fast track designations

The FDA grants orphan designation to products intended to treat, diagnose, or prevent diseases/disorders that affect fewer than 200,000 people in the US.

The designation provides incentives for sponsors to develop products for rare diseases. This may include tax credits toward the cost of clinical trials, prescription drug user fee waivers, and 7 years of market exclusivity if the product is approved.

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.

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mycosis fungoides
Micrograph showing

The US Food and Drug Administration (FDA) has granted orphan drug designation to tenalisib for treatment of cutaneous T-cell lymphoma (CTCL).

Tenalisib (formerly RP6530) is a dual PI3K delta/gamma inhibitor under development by Rhizen Pharmaceuticals SA.

The FDA previously granted tenalisib fast track and orphan drug designations for the treatment of peripheral T-cell lymphoma (PTCL).

Tenalisib has been investigated in a phase 1 trial of patients with relapsed/refractory PTCL and CTCL. Results from this trial were presented at the 10th Annual T-cell Lymphoma Forum in February.

The data included 55 patients—28 with CTCL and 27 with PTCL—who received varying doses of tenalisib. The maximum tolerated dose was an 800 mg daily fasting dose.

Fourteen PTCL patients were evaluable for efficacy, and 7 responded (50%) to treatment. Three patients had a complete response, and 4 had a partial response.

Eighteen CTCL patients were evaluable for efficacy. Eight patients responded (44%), all with partial responses.

In the entire cohort, treatment-related adverse events (AEs) of grade 3 or higher included transaminitis (20%), rash (5%), neutropenia (2%), hypophosphatemia (2%), international normalized ratio increase (2%), sepsis (2%), pyrexia (2%), and diplopia secondary to neuropathy (2%).

Four CTCL patients stopped tenalisib due to a treatment-related AE—transaminitis, sepsis, diarrhea, and diplopia secondary to neuropathy. One PTCL patient stopped treatment due to a related AE, which was transaminitis.

About orphan and fast track designations

The FDA grants orphan designation to products intended to treat, diagnose, or prevent diseases/disorders that affect fewer than 200,000 people in the US.

The designation provides incentives for sponsors to develop products for rare diseases. This may include tax credits toward the cost of clinical trials, prescription drug user fee waivers, and 7 years of market exclusivity if the product is approved.

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.

mycosis fungoides
Micrograph showing

The US Food and Drug Administration (FDA) has granted orphan drug designation to tenalisib for treatment of cutaneous T-cell lymphoma (CTCL).

Tenalisib (formerly RP6530) is a dual PI3K delta/gamma inhibitor under development by Rhizen Pharmaceuticals SA.

The FDA previously granted tenalisib fast track and orphan drug designations for the treatment of peripheral T-cell lymphoma (PTCL).

Tenalisib has been investigated in a phase 1 trial of patients with relapsed/refractory PTCL and CTCL. Results from this trial were presented at the 10th Annual T-cell Lymphoma Forum in February.

The data included 55 patients—28 with CTCL and 27 with PTCL—who received varying doses of tenalisib. The maximum tolerated dose was an 800 mg daily fasting dose.

Fourteen PTCL patients were evaluable for efficacy, and 7 responded (50%) to treatment. Three patients had a complete response, and 4 had a partial response.

Eighteen CTCL patients were evaluable for efficacy. Eight patients responded (44%), all with partial responses.

In the entire cohort, treatment-related adverse events (AEs) of grade 3 or higher included transaminitis (20%), rash (5%), neutropenia (2%), hypophosphatemia (2%), international normalized ratio increase (2%), sepsis (2%), pyrexia (2%), and diplopia secondary to neuropathy (2%).

Four CTCL patients stopped tenalisib due to a treatment-related AE—transaminitis, sepsis, diarrhea, and diplopia secondary to neuropathy. One PTCL patient stopped treatment due to a related AE, which was transaminitis.

About orphan and fast track designations

The FDA grants orphan designation to products intended to treat, diagnose, or prevent diseases/disorders that affect fewer than 200,000 people in the US.

The designation provides incentives for sponsors to develop products for rare diseases. This may include tax credits toward the cost of clinical trials, prescription drug user fee waivers, and 7 years of market exclusivity if the product is approved.

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.

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