European Medicines Agency Validates Gilead’s Marketing Application for Single Tablet Regimen Containing Rilpivirine, Emtricitabine and Tenofovir Alafenamide (R/F/TAF) for HIV Treatment

Gilead’s Third TAF-based Filing Under Review by EMA

Foster City, CA, August 20, 2015 – Gilead Sciences, Inc. (NASDAQ: GILD) today announced that the company’s Marketing Authorization Application (MAA) for an investigational, once-daily single tablet regimen that combines emtricitabine 200 mg, tenofovir alafenamide 25 mg and rilpivirine 25 mg (R/F/TAF) has been fully validated and is now under evaluation by the European Medicines Agency (EMA). Emtricitabine and tenofovir alafenamide are marketed by Gilead Sciences and rilpivirine is marketed by Janssen Sciences Ireland UC, one of the Janssen Pharmaceutical Companies of Johnson & Johnson.

The data included in the application support the use of R/F/TAF for the treatment of HIV-1 infection in adults and pediatric patients 12 years and older.

“With this validation, R/F/TAF is now the third TAF-based filing under review by the EMA as we advance a portfolio of new treatment options that may offer high efficacy and favorable safety profiles,” said Norbert Bischofberger, PhD, Executive Vice President, Research and Development and Chief Scientific Officer, Gilead Sciences. “The R/F/TAF filing also represents the next step in our collaboration with Janssen to develop HIV treatments that potentially meet the diverse needs of people living with HIV.”

TAF is a novel investigational nucleotide reverse transcriptase inhibitor (NRTI) that has demonstrated high antiviral efficacy at a dose less than one-tenth that of Gilead’s Viread® (tenofovir disoproxil fumarate, TDF)¹, as well as improved renal and bone laboratory parameters as compared to TDF in clinical trials in combination with other antiretroviral agents.

In addition to R/F/TAF, two other MAAs for TAF-based regimens are under review by the EMA. The MAA for an investigational once-daily single tablet regimen containing elvitegravir 150 mg, cobicistat 150 mg, emtricitabine 200 mg and tenofovir alafenamide 10 mg (E/C/F/TAF) was fully validated on December 23, 2014. The MAA for two doses of an investigational fixed-dose combination of emtricitabine and tenofovir alafenamide (200/10 mg and 200/25 mg) (F/TAF) was fully validated on May 28, 2015. Gilead has submitted New Drug Applications to the U.S. Food and Drug Administration for E/C/F/TAF, F/TAF and R/F/TAF on November 5, 2014, April 7, 2015, and July 1, 2015, respectively^2,3.

The current MAA is supported by a bioequivalence study demonstrating that administration of R/F/TAF results in the same blood levels of emtricitabine and TAF as those that are achieved with E/C/F/TAF (10 mg TAF dosage) and the same levels of rilpivirine as a 25 mg dose of rilpivirine (Edurant®) alone. The safety and efficacy of TAF is supported by a number of clinical studies in a range of patients with HIV, including treatment-naïve adults and adolescents, virologically suppressed adults who switched regimens and adults with mild-to-moderate renal impairment. In studies, TAF-based treatment (administered as E/C/F/TAF) resulted in non-inferior efficacy and improved renal and bone laboratory parameters as compared to TDF-based therapy (administered as E/C/F/TDF or Stribild®)^4,5.

The R/F/TAF filing will be reviewed by the EMA under the centralized procedure, which, when finalized, may lead to the granting of marketing authorization by the European Commission, which is valid in all 28 member states of the European Union.

The R/F/TAF filing is the latest step in an expanded development and commercialization agreement between Gilead and Janssen, first established in 2009. Under this agreement, and pending the product’s approval, Gilead will be responsible for the manufacturing, registration, distribution and commercialization of the regimen in most countries, while Janssen will distribute it in approximately 17 markets and have codetailing rights in several key markets. The original agreement was established for the development and commercialization of Eviplera®, marketed as Complera® in the United States.

A fourth investigational TAF-based regimen containing Gilead’s TAF, emtricitabine and cobicistat, and Janssen’s darunavir (D/C/F/TAF) is also under development under a separate licensing agreement. Under the agreement, Gilead is transferring to Janssen further development of the regimen and, subject to regulatory approval, the manufacturing, registration, distribution and commercialization of the product worldwide.

TAF and TAF-based regimens are investigational products and have not been determined to be safe or efficacious.

About Gilead
Gilead Sciences is a biopharmaceutical company that discovers, develops and commercializes innovative therapeutics in areas of unmet medical need. The company’s mission is to advance the care of patients suffering from life-threatening diseases. Gilead has operations in more than 30 countries worldwide, with headquarters in Foster City, California.

Forward-Looking Statement
This press release includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 that are subject to risks, uncertainties and other factors, including the possibility that the EMA may not adopt a positive opinion in its evaluation and the European Commission may not grant marketing authorization for R/F/TAF. Further, the FDA, the European Commission and other regulatory authorities may not approve R/F/TAF, F/TAF, E/C/F/TAF and other TAF-based regimens in the currently anticipated timelines or at all, and marketing approvals, if granted, may have significant limitations on their use. As a result, R/F/TAF, F/TAF, E/C/F/TAF and other TAF-based regimens may never be successfully commercialized. In addition, Gilead may be unable to file for regulatory approval for D/C/F/TAF with regulatory authorities in the currently anticipated timelines. These risks, uncertainties and other factors could cause actual results to differ materially from those referred to in the forward-looking statements. The reader is cautioned not to rely on these forward-looking statements. These and other risks are described in detail in Gilead’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2015, as filed with the U.S. Securities and Exchange Commission. All forward-looking statements are based on information currently available to Gilead, and Gilead assumes no obligation to update any such forwardlooking statements.

The European SmPCs for Stribild, Eviplera, and Viread are available from the EMA website at www.ema.europa.eu. 
Edurant is a registered trademark of Johnson & Johnson, or its related companies. 
Stribild, Complera, Eviplera and Viread are registered trademarks of Gilead Sciences, Inc., or its related companies. 
For more information on Gilead Sciences, please visit the company’s website at www.gilead.com, follow Gilead on Twitter (@GileadSciences) or call Gilead Public Affairs at 1-800-GILEAD-5 or 1-650-574-3000.

¹ Press release, Gilead’s Investigational Tenofovir Alafenamide (TAF)-Based Single Tablet HIV Regimen Meets 48-Week Primary Objective in Two Phase 3 Studies; available at http://www.gilead.com/news/press-releases/2014/9/gileadsinvestigational-tenofovir-alafenamide-tafbased-single-tablet-hiv-regimen-meets-48week-primary-objective-in-two-phase-3studies; last accessed 25 February 2015.
² Press release 7 April, 2015: Gilead Submits New Drug Application to U.S. Food and Drug Administration for Fixed-Dose Combination of Emtricitabine/Tenofovir Alafenamide for HIV Treatment; available www.gilead.com/news/pressreleases/2015/4/gilead-submits-new-drug-application-to-us-food-and-drug-administration-for-fixeddose-combination-ofemtricitabinetenofovir-alafenamide-for-hiv-treatment
³ Press release 1 July, 2015: Gilead Submits New Drug Application to U.S. Food and Drug Administration for Single Tablet Regimen for HIV Containing Rilpivirine, Emtricitabine and Tenofovir Alafenamide (R/F/TAF); available at www.gilead.com/news/press-releases/2015/7/gilead-submits-new-drug-application-to-us-food-and-drug-administration-forsingle-tablet-regimen-for-hiv-containing-rilpivirine-emtricitabine-and-tenofovir-alafenamide-rftaf
⁴ Wohl D et al. Tenofovir Alafenamide (TAF) in a Single-Tablet Regimen in Initial HIV-1 Therapy. [CROI presentation of abstract 113LB; Date: February 25, 2015; Time: 12:30 PST].
⁵ Sax P et al. Renal and Bone Safety of Tenofovir Alafenamide vs Tenofovir Disoproxil Fumarate. [CROI abstract 143LB; Date: February 26, 2015; Time: 12:30 PST].