Liquidia Corporation Provides Update on New Drug Application for Yutrepia (treprostinil) inhalation powder

Liquidia Corporation (the Company) (NASDAQ: LQDA) announced  the U.S. Food and Drug Administration (FDA) providing  an update on its review of the New Drug Application (NDA) for Yutrepia™ (treprostinil) inhalation powder to treat pulmonary arterial hypertension (PAH) and pulmonary hypertension associated with interstitial lung disease (PH-ILD). The FDA informed the Company that it is confirming the process for adding the PH-ILD indication as an amendment to the NDA for Yutrepia. Accordingly, the FDA is not able to issue an action letter in time to meet the previously issued Prescription Drug User Fee Act (PDUFA) goal date of January 24, 2024, and their review remains ongoing. The FDA did not request any additional clinical data to support the NDA and did not issue a new PDUFA goal date.

Dr. Roger Jeffs, Chief Executive Officer, said: “We are in active communication with the FDA regarding the process we followed to amend our NDA to add PH-ILD to the labeled indication. Whether the NDA is amended or supplemented, we will continue to prepare for the final FDA approval of Yutrepia to treat both PAH and PH-ILD patients following the expiration of regulatory exclusivity for Tyvaso® on March 31, 2024. As communicated by the tentative approval to treat PAH, Yutrepia has already met the regulatory standards for quality, safety and efficacy. We remain committed to addressing the unmet needs across all patients whose lives may be improved by the unique benefits of Yutrepia.”

On November 5, 2021, the FDA issued a tentative approval for Yutrepia for the treatment of PAH to improve exercise ability in adult patients with New York Heart Association (NYHA) Functional Class II-III symptoms. In July 2023, Liquidia filed an amendment to its New Drug Application for Yutrepia, seeking to add PH-ILD to the label. The FDA previously confirmed that Yutrepia may include the treatment of PH-ILD to the proposed label for Yutrepia without additional clinical studies.

Yutrepia also remains subject to ongoing litigation. Liquidia filed a request for Judge Andrews of the U.S. District Court for the District of Delaware (District Court) to set aside the injunction that was instituted in August 2022 tied to litigation filed by United Therapeutics (UTHR) alleging patent infringement of U.S. Patent No. 10,716,793 (the ‘793 Patent) in Case No. 1:20-cv-00755-RGA (the Original Hatch-Waxman Litigation). On December 20, 2023, the United States Court of Appeals for the Federal Circuit (CAFC) affirmed the earlier decision by the Patent Trial and Appeal Board (PTAB), which found all claims of the ‘793 Patent to be unpatentable due to the existence of prior art cited by Liquidia in inter partes review proceedings.

Additionally, in September 2023, UTHR filed a second complaint for patent infringement in District Court in Case No. 1:23-cv-00975-RGA (the New Hatch-Waxman Litigation). As of January 22, 2024, the only patent at issue is U.S. Patent No. 11,826,327 (the ‘327 Patent) which issued November 30, 2023. UTHR has stipulated to the dismissal of the ‘793 Patent from the New Hatch-Waxman Litigation as a result of the CAFC decision affirming invalidity of the '793 Patent. The ’327 Patent, the sole remaining patent at issue in the New Hatch-Waxman Litigation, was not issued before Liquidia submitted the NDA for Yutrepia in January 2020 to treat PAH. Therefore, the Company believes that final FDA approval for Yutrepia will not be subject to any statutory 30-month stay arising from the New Hatch-Waxman Litigation per Section 505(c)(3)(C) of the Federal Food, Drug and Cosmetic Act.

Ref: https://en.wikipedia.org/wiki/Treprostinil

Read https://www.drugs.com/nda/yutrepia_240125.html

Liquidia Corporation Provides Update on New Drug Application for Yutrepia (treprostinil) inhalation powder

FDA Grants Tentative Approval for Liquidia’s Yutrepia (treprostinil) Inhalation Powder

 In continuation of my update on treprostinil

 

Liquidia Corporation  announced that, the U.S. Food and Drug Administration (FDA) has granted tentative approval for Yutrepia™ (treprostinil) inhalation powder, previously referred to as LIQ861. Yutrepia is indicated for the treatment of pulmonary arterial hypertension (PAH) to improve exercise ability in adult patients with New York Heart Association (NYHA) Functional Class II-III symptoms. Tentative approval indicates that Yutrepia has met all regulatory standards for quality, safety and efficacy required for approval in the United States.

 

Dr. Tushar Shah, Chief Medical Officer of Liquidia, said: “We would like to take the opportunity to thank the patients and investigators who participated in the clinical development of Yutrepia. The tentative approval for Yutrepia is another step toward providing an important option for patients with PAH in the U.S. We believe Yutrepia can improve the limitations of current nebulized therapies by allowing the administration of an expanded dose range of inhaled treprostinil using a proven, convenient, palm-sized device.”

The addressable market for inhaled treprostinil is significant and expected to grow. In 2020, United Therapeutics reported that its nebulized formulation of treprostinil indicated for PAH achieved sales of more than $480 million. The attributes of Yutrepia including ease-of-use, convenience, direct lung delivery, and higher dosage range may not only make Yutrepia a preference to nebulized therapy, but also an alternative to oral treatments, and possibly a treatment option to delay the use of parenteral therapies in PAH. There may also be future expansion opportunities for inhaled treprostinil into additional indications.

Damian deGoa, Chief Executive Officer of Liquidia added: “This is a significant milestone for Liquidia. We are really proud of our team. Not only does the tentative approval establish the safety and efficacy of Yutrepia for PAH patients but, in the process, we have validated our proprietary PRINT® technology to engineer discrete drug particles with uniform composition, size, and shape. There is more work to be done. We will now focus our efforts on pre-commercial launch activities and the growing market opportunity for Yutrepia in PAH and potential new indications.”

Due to a regulatory stay pursuant to the Drug Price Competition and Patent Term Restoration Act (Hatch-Waxman Act), Yutrepia cannot yet be marketed in the United States. In June 2020, United Therapeutics filed a lawsuit against Liquidia for alleged infringement of three patents related to Tyvaso®. As a result, the FDA cannot give final approval of Yutrepia until the expiration of the regulatory stay on October 27, 2022, or earlier resolution or settlement of the ongoing litigation.

About Yutrepia™(treprostinil) inhalation powder
Yutrepia is an investigational, inhaled dry powder formulation of treprostinil delivered through a proven, convenient, palm-sized device. On November 5, 2021, the FDA issued a tentative approval for Yutrepia, which is indicated for the treatment of pulmonary arterial hypertension (PAH) to improve exercise ability in adult patients with New York Heart Association (NYHA) Functional Class II-III symptoms. Yutrepia was designed using Liquidia’s PRINT® technology, which enables the development of drug particles that are precise and uniform in size, shape, and composition, and that are engineered for optimal deposition in the lung following oral inhalation. Liquidia has completed INSPIRE, or Investigation of the Safety and Pharmacology of Dry Powder Inhalation of Treprostinil, an open-label, multi-center phase 3 clinical study of Yutrepia in patients diagnosed with PAH who are naïve to inhaled treprostinil or who are transitioning from Tyvaso (nebulized treprostinil). Yutrepia was previously referred to as LIQ861 in investigational studies.

FDA Approves AirDuo Digihaler (fluticasone propionate and salmeterol) Inhalation Powder for Asthma

In continuation of my update on (fluticasone propionate and salmeterol

   

Teva Pharmaceutical Industries Ltd. (NYSE and TASE: TEVA) announced today that the U.S. Food and Drug Administration (FDA) has approved AirDuo® Digihaler™ (fluticasone propionate 113 mcg and salmeterol 14 mcg) Inhalation Powder, a combination therapy digital inhaler with built-in sensors that connects to a companion mobile application to provide information on inhaler use to people with asthma. AirDuo Digihaler is indicated for the treatment of asthma in patients aged 12 years and older. AirDuo Digihaler is not used to relieve sudden breathing problems and won’t replace a rescue inhaler.

“We are thrilled to be able to expand our Digihaler™ portfolio to now include a maintenance treatment,” said Tushar Shah, M.D., Global Head of Specialty Clinical Development at Teva Pharmaceuticals. “With this approval, patients can now track how frequently they are using their inhalers. Granting patients the ability to track their maintenance inhaler use may help inform conversations with their doctors about treatment adherence and proper technique.”

Like ProAir® Digihaler™ (albuterol sulfate 117 mcg) inhalation powder, indicated for the treatment or prevention of bronchospasm in patients aged four years and older with reversible obstructive airway disease, and for prevention of exercise-induced bronchospasm (EIB) in patients four years and older, AirDuo® Digihaler™ contains built-in sensors that detect when the inhaler is used and measure inspiratory flow rates. This data is then sent to a companion mobile app using Bluetooth® Wireless Technology so that patients can review their data over time, and if desired, share it with their healthcare providers. Patients can also schedule reminders on their smartphone to take their AirDuo® Digihaler™ as prescribed.

“Even the most diligent asthma patients may not realize they are not following their treatment regimen, despite their best efforts,” said Dr. Nabeel Farooqui, MD, FAAAAI, FACAAI, Assistant Professor, Department of Medicine, Indiana University School of Medicine. “The ability to now measure their inspiratory flow rates and track their maintenance medication use, as well as the frequency with which they use their inhaler, may provide important data and insights to help inform treatment discussions with physicians. As a doctor, it’s exciting that my patients are able to share this type of information with me.”

The approval of AirDuo Digihaler is based on the review of the supplemental new drug application (sNDA) submitted by Teva to the FDA. AirDuo Digihaler combines a breath-actuated, multi-dose dry powder inhaler with fluticasone propionate, an inhaled corticosteroid (ICS) medicine that may help to decrease inflammation in the lungs, which can lead to breathing problems, and salmeterol, a long acting beta2 adrenergic agonist (LABA), which helps the muscles around the airways in the lungs stay relaxed in order to prevent symptoms. AirDuo Digihaler contains salmeterol. LABA medicines such as salmeterol when used alone increase the risk of hospitalizations and death from asthma problems. AirDuo Digihaler contains an ICS and a LABA. When an ICS and a LABA are used together, there is not a significant increased risk in hospitalizations and death from asthma problems.

AirDuo Digihaler was approved in a low, medium and high dose: 55/14 mcg, 113/14 mcg and 232/14 mcg administered as one inhalation twice daily. As a fixed dose combination asthma therapy containing an ICS and a LABA, AirDuo Digihaler contains the same active ingredients as Advair Diskus, which is also approved in low, medium and high doses: 100/50 mcg, 250/50 mcg and 500/50 mcg.

“For the 25 million Americans living with asthma1, advancements like this one are important and could help patients track their inhaler use and frequency,” said Tonya Winders, President & CEO of the Allergy & Asthma Network. “Allowing patients access to both their rescue and maintenance inhaler use information on their smartphones is a promising step towards potentially fostering greater discussions about asthma management.”

“The approval of AirDuo Digihaler is an important step for Teva and the respiratory community to create a technology platform for use in asthma management along with the previously-approved ProAir Digihaler,” said Sven Dethlefs, Executive Vice President, Global Marketing & Portfolio. “This technology aims at delivering innovations through cloud-based services with the target to provide new insights to guide treatment choices for caregivers to help them improve outcomes for asthma patients.”

https://en.wikipedia.org/wiki/Fluticasone

https://en.wikipedia.org/wiki/Salmeterol

FDA Approves Wixela Inhub (fluticasone propionate and salmeterol inhalation powder, USP), First Generic of Advair Diskus

In continuation of my updates on fluticasone propionate & salmeterol

              

Mylan N.V. (NASDAQ: MYL)  announced the U.S. Food and Drug Administration (FDA) approval of Wixela Inhub (fluticasone propionate and salmeterol inhalation powder, USP), the first generic of Advair Diskus.

Wixela Inhub will launch in the second half of February incorporating the latest safety information required by FDA earlier this month, which prompted an amendment to the label for certain inhaled corticosteroids, including Advair Diskus and any generic versions. Wixela Inhub will be available in the 100 mcg/50 mcg, 250 mcg/50 mcg and 500 mcg/50 mcg strengths for asthma patients and the 250 mcg/50 mcg strength for COPD patients.

Mylan CEO Heather Bresch commented, "Mylan remains steadfast in its efforts to expand patient access to medicines, and the FDA approval of Wixela Inhub reinforces our commitment to provide patients greater choice and lower-cost alternatives. This milestone represents the culmination of an extensive research and development program and Mylan's more than $700 million of investment. We're proud of our Wixela Inhub team, who worked tirelessly and in close collaboration with the FDA to bring this important medicine to market and add it to our growing global portfolio of more than 700 respiratory products. As one of the leading providers of prescription medicines in the U.S., we continue to execute on our mission and do our part to reduce costs for patients and identify pathways that help increase sustainability for the U.S. healthcare system overall."

Wixela Inhub is indicated for the twice daily treatment of asthma in patients age 4 and older not adequately controlled on long-term asthma control medications or whose disease warrants initiation of treatment with both inhaled corticosteroids and long-acting beta agonists; maintenance treatment of COPD; and the reduction of COPD exacerbations in patients with a history of exacerbations. It is not indicated for the relief of acute bronchospasm.

Mylan President Rajiv Malik added, "We're pleased to offer the first FDA-approved generic of Advair Diskus, one of the leading treatments for asthma and COPD management today. We've long been confident in the science around this product and are proud of the dedication of our scientific teams to bring Wixela Inhub to market. This complex product required a rigorous research and development program spanning over a decade and close collaboration with FDA to define the regulatory pathway. We also are proud to manufacture Wixela Inhub in our own state-of-the-art plant. This approval reinforces our ongoing commitment to increase access to more affordable treatment options for patients."

The research and development program for Wixela Inhub compared all strengths of treatment to Advair Diskus in order to meet the FDA requirements of therapeutic equivalence for a substitutable generic. In the 28-day, randomized, double-blind, placebo-controlled, parallel group study of 1,128 adult asthma patients conducted to evaluate the local (lung) bioequivalence of Wixela Inhub 100 mcg/50 mcg and ADVAIR DISKUS 100 mcg/50 mcg, the two treatments produced equivalent efficacy. Both treatments were safe and well-tolerated with lower numbers of withdrawals due to asthma compared to the placebo group. The study included both naive and current users of Advair Diskus.

"Patients enrolled in clinical trials found Wixela Inhub easy-to-use and highly effective at controlling their asthma in a clinical bioequivalence study. Asthma and respiratory specialists and primary care providers welcome this generic alternative to benefit many patients with asthma and COPD.  We have waited for years for generic inhalers to emerge in respiratory medicine," said Edward Kerwin, MD of Crisor LLC, a division of the Clinical Research Institute located in Medford, Ore. and a Clinical Investigator on the Wixela Inhub clinical program.

Advair Diskus had U.S. sales of $4.2 billion for the 12 months ending November 30, 2018, according to IQVIA.

https://en.wikipedia.org/wiki/Salmeterol

https://www.drugbank.ca/drugs/DB00588