Last modified
12/18/2018 - 03:04

FDA approves Trogarzo(ibalizumab-uiyk)

March 6, 2018, the U.S. Food and Drug Administration approved Trogarzo (ibalizumab-uiyk), a new type of antiretroviral medication for adult patients living with HIV who have tried multiple HIV medications in the past (heavily treatment-experienced) and whose HIV infections cannot be successfully treated with other currently available therapies (multidrug resistant HIV, or MDR HIV).Trogarzo is administered intravenously once every 14 days by a trained medical professional and used in combination with other antiretroviral medications.



“While most patients living with HIV can be successfully treated using a combination of two or more antiretroviral drugs, a small percentage of patients who have taken many HIV drugs in the past have multidrug resistant HIV, limiting their treatment options and putting them at a high risk of HIV-related complications and progression to death,” said Jeff Murray, M.D., deputy director of the Division of Antiviral Products in the FDA’s Center for Drug Evaluation and Research. “Trogarzo is the first drug in a new class of antiretroviral medications that can provide significant benefit to patients who have run out of HIV treatment options. New treatment options may be able to improve their outcomes.”

The safety and efficacy of Trogarzo were evaluated in a clinical trial of 40 heavily treatment-experienced patients with MDR HIV-1 who continued to have high levels of virus (HIV-RNA) in their blood despite being on antiretroviral drugs. Many of the participants had previously been treated with 10 or more antiretroviral drugs. The majority of participants experienced a significant decrease in their HIV-RNA levels one week after Trogarzo was added to their failing antiretroviral regimens. After 24 weeks of Trogarzo plus other antiretroviral drugs, 43 percent of the trial’s participants achieved HIV RNA suppression.

The clinical trial focused on the small patient population with limited treatment options and demonstrated the benefit of Trogarzo in achieving reduction of HIV RNA. The seriousness of the disease, the need to individualize other drugs in the treatment regimen, and safety data from other trials were considered in evaluating the Trogarzo development program. 

A total of 292 patients with HIV-1 infection have been exposed to Trogarzo IV infusion. The most common adverse reactions to Trogarzo were diarrhea, dizziness, nausea and rash. Severe side effects included rash and changes in the immune system (immune reconstitution syndrome).      

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

Name: Ibalizumab- uiyk; Trogarzo
CAS No.: 680188-33-4
Chemical Names: Ibalizumab-uiyk; TMB-355, TNX-355

What is the drug for?

TROGARZO is a drug for the treatment of human immunodeficiency virus 1 (HIV-1) infection in adults who:

  • have received several anti-HIV-1 regimens in the past, and
  • have HIV-1 virus that is not responding to many antiretroviral medicines, and
  • who are failing their current antiretroviral therapy

HIV-1 is the virus that causes AIDS (Acquired Immune Deficiency Syndrome).

How is this drug used?

TROGARZO is used in combination with other antiretroviral medications.

TROGARZO is is given by a health care professional once every two weeks directly into the bloodstream through a needle in the vein. This is known as an intravenous, or IV infusion. It takes 15-30 minutes to receive TROGARZO infusion.

What are the benefits of this drug?

In the trial, 33 of the 40 patients (83%) treated with TROGARZO experienced a significant decrease in their HIV-RNA levels one week after TROGARZO was added to their failing antiretroviral regimens.

After 24 weeks of TROGARZO treatment (in combination with other antiretroviral drugs), 43 % of the patients achieved HIV RNA suppression.


The FDA granted approval of Trogarzo to TaiMed Biologics USA Corp.




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