ALLSCHWIL, Switzerland, Nov. 12, 2019 /PRNewswire/ -- Actelion Pharmaceuticals Ltd, one of the Janssen Pharmaceutical Companies of Johnson & Johnson, has announced its decision to voluntarily withdraw the European and other health authority filings still under review to extend the indication of OPSUMIT® (macitentan) to include the treatment of adults with inoperable chronic thromboembolic pulmonary hypertension (CTEPH). This decision was not driven by any safety concerns. Actelion intends to generate additional data to support future CTEPH filings in Europe, U.S. and worldwide.
Feedback from health authorities, including in the U.S. and Europe, and from recent study site inspections indicated that additional clinical data would be required for approval. As a result, Actelion has decided to withdraw the ongoing worldwide submissions based on the Phase 2 study of Macitentan in thE tReatment of Inoperable chronic Thromboembolic pulmonary hypertension (MERIT-1). In the U.S., the Food and Drug Administration (FDA) issued a Complete Response letter earlier this year and Actelion is working with them to agree on next steps.
"We remain committed to addressing the high unmet needs that persist in this severe, life-limiting disease and will continue to study macitentan in this patient population," said Martin Fitchet, M.D., Global Head, Actelion Research & Development, Janssen Research & Development, LLC.
Notes to the Editor
What is OPSUMIT® (macitentan)?1
OPSUMIT is a prescription medicine used to treat pulmonary arterial hypertension (PAH, WHO Group 1). PAH is high blood pressure in the arteries of your lungs. OPSUMIT can:
- Improve your ability to exercise as measured by the 6-minute walk distance (6MWD). In a clinical study of mainly WHO FC II-III patients, those taking OPSUMIT walked, on average, 22 meters farther at Month 6 than patients not taking it
- Improve some of your symptoms
- Help slow down the progression of your disease
- Lower your chance of being hospitalized for PAH
It is not known if OPSUMIT is safe and effective in children.
The most important information about OPSUMIT® (macitentan)
Do not take OPSUMIT if you are pregnant or trying to get pregnant. OPSUMIT can cause serious birth defects if taken while pregnant.
Women who are able to get pregnant must have negative pregnancy tests:
- Before starting OPSUMIT
- Each month while taking OPSUMIT
- For 1 month after stopping OPSUMIT
Your doctor will decide when you should take pregnancy tests.
You are medically able to get pregnant if you are a woman who fits all of the following guidelines:
- has started puberty, even if you have not had a menstrual period yet
- has a uterus
- has not gone through menopause (menopause means you have not had a menstrual period for at least 12 months for natural reasons, or have had your ovaries removed)
You are not medically able to get pregnant if you are a woman who fits at least one of the following guidelines:
- has not started puberty
- does not have a uterus
- has gone through menopause (you have not had a menstrual period for at least 12 months for natural reasons, or have had your ovaries removed)
- is infertile for other medical reasons and this infertility is permanent and cannot be reversed
While taking OPSUMIT, and for 1 month after stopping OPSUMIT, women who are able to get pregnant must use 2 acceptable forms of birth control. Women who have had a tubal sterilization, a progesterone implant, or have an IUD (intrauterine device) do not need a second form of birth control. Talk to your doctor or gynecologist about which birth control to use while on OPSUMIT. If you decide to change your form of birth control, talk with your doctor or gynecologist. This way you can be sure to choose another acceptable form of birth control. Also review the Medication Guide for acceptable birth control options.
It's important not to have unprotected sex while taking OPSUMIT. Tell your doctor right away if you have unprotected sex, think your birth control has failed, miss a menstrual period, or think you may be pregnant. He or she may recommend using a form of emergency birth control.
If you are the parent or caregiver of a female child who started taking OPSUMIT before reaching puberty, check with your child regularly for any signs of puberty. Your child may reach puberty before having her first menstrual period. Talk to your doctor if you think your child is showing signs of puberty or if you have any questions about the signs of puberty.
Before starting OPSUMIT, women must enroll in a program called the OPSUMIT Risk Evaluation and Mitigation Strategy (REMS). If you are a woman who is able to get pregnant, you must talk to your doctor to learn the benefits and risks of OPSUMIT. You must also agree to all of the instructions in the program. Men who are prescribed OPSUMIT do not need to enroll in this program.
Who should not take OPSUMIT?
Do not take OPSUMIT if you are pregnant, plan to become pregnant, or become pregnant during treatment with OPSUMIT. OPSUMIT can cause serious birth defects. See "The most important information about OPSUMIT."
Talk to your doctor about all your medical conditions, as well as all the medicines, vitamins, and supplements you take. OPSUMIT and other medicines may affect each other causing side effects. Tell your doctor right away if you take an HIV medicine. Do not start any new medicine until you check with your doctor.
What should I avoid while taking OPSUMIT?
- Do not get pregnant. OPSUMIT can cause serious birth defects. See "The most important information about OPSUMIT." If you miss a menstrual period or think you may be pregnant, call your doctor right away
- You should not breastfeed if you take OPSUMIT. It is not known if OPSUMIT passes into your breast milk. Talk to your doctor about the best way to feed your baby
What are the possible side effects of OPSUMIT?
OPSUMIT can cause serious side effects, including:
- Serious birth defects. See "The most important information about OPSUMIT"
- Some medicines that are like OPSUMIT can cause liver problems. Your doctor should do blood tests to check your liver before you start OPSUMIT. Tell your doctor if you have any of these symptoms, which could be a sign of liver problems while on OPSUMIT:
- Nausea or vomiting
- Pain in the upper right stomach
- Feeling tired
- Loss of appetite
- Your skin or the whites of your eyes turn yellow
- Dark urine
- Fluid retention could happen during the first weeks after starting OPSUMIT. Tell your doctor right away if you notice unusual weight gain or swelling in your ankles or legs. Your doctor will look for the cause
- Low red blood cell levels (anemia) can happen while taking OPSUMIT, usually during the first weeks after starting OPSUMIT. In some cases a blood transfusion may be needed, but this is not common. Your doctor will do blood tests to check for anemia before you start OPSUMIT. You may also need to do these blood tests while taking OPSUMIT
- Decreased sperm counts. OPSUMIT, and other medicines like OPSUMIT, may cause decreased sperm counts in men who take these medicines. If fathering a child is important to you, tell your doctor
The most common side effects are:
- Stuffy nose or sore throat
- Irritation of the airways (bronchitis)
- Urinary tract infection
Talk to your doctor if you have a side effect that bothers you or does not go away. These are not all the possible side effects of OPSUMIT. For more information, ask your doctor or pharmacist.
You may report side effects to FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.
Please see full Prescribing Information and Medication Guide, including an Important Warning about Serious Birth Defects at http://opsumit.com/opsumit-prescribing-information.pdf.
Actelion is the recognized global industry leader in pulmonary arterial hypertension (PAH, WHO Group 1), with a 20-year heritage of ground-breaking innovation that has helped transform the lives of more than 300,000 patients worldwide. In June 2017, Actelion became part of the Janssen Pharmaceutical Companies of Johnson & Johnson. Actelion's medicines have helped to expand and strengthen Janssen's portfolio with leading, differentiated in-market medicines and promising late-stage compounds. Janssen has added Pulmonary Hypertension as a therapeutic area of focus to maintain the leadership position Actelion has built in this important disease area. Learn more at www.actelion.com. Follow us on Twitter @actelion_com.
ABOUT THE JANSSEN PHARMACEUTICAL COMPANIES OF JOHNSON & JOHNSON
At Janssen, we are creating a future where disease is a thing of the past. We are the Pharmaceutical Companies of Johnson & Johnson, working tirelessly to make that future a reality for patients everywhere by fighting sickness with science, improving access with ingenuity, and healing hopelessness with heart. We focus on areas of medicine where we can make the biggest difference: Cardiovascular & Metabolism, Immunology, Infectious Diseases & Vaccines, Neuroscience, Oncology and Pulmonary Hypertension. Learn more at www.janssen.com. Follow us at www.twitter.com/JanssenGlobal.
Actelion Pharmaceuticals Ltd and Janssen Research & Development, LLC, are part of the Janssen Pharmaceutical Companies of Johnson & Johnson.
CAUTIONS CONCERNING FORWARD-LOOKING STATEMENTS
This press release contains "forward-looking statements" as defined in the Private Securities Litigation Reform Act of 1995 regarding the development of OPSUMIT® (macitentan). The reader is cautioned not to rely on these forward-looking statements. These statements are based on current expectations of future events. If underlying assumptions prove inaccurate or known or unknown risks or uncertainties materialize, actual results could vary materially from the expectations and projections of Actelion Pharmaceuticals US, Inc., any of the other Janssen Pharmaceutical Companies and/or Johnson & Johnson. Risks and uncertainties include, but are not limited to: challenges and uncertainties inherent in product research and development, including the uncertainty of clinical success and of obtaining regulatory approvals; uncertainty of commercial success; manufacturing difficulties and delays; competition, including technological advances, new products and patents attained by competitors; challenges to patents; product efficacy or safety concerns resulting in product recalls or regulatory action; changes in behavior and spending patterns of purchasers of health care products and services; changes to applicable laws and regulations, including global health care reforms; and trends toward health care cost containment. A further list and descriptions of these risks, uncertainties and other factors can be found in Johnson & Johnson's Annual Report on Form 10-K for the fiscal year ended December 30, 2018, including in the sections captioned "Cautionary Note Regarding Forward-Looking Statements" and "Item 1A. Risk Factors," and in the company's most recently filed Quarterly Report on Form 10-Q, and the company's subsequent filings with the Securities and Exchange Commission. Copies of these filings are available online at www.sec.gov, www.jnj.com or on request from Johnson & Johnson. None of the Janssen Pharmaceutical Companies nor Johnson &Johnson undertakes to update any forward-looking statement as a result of new information or future events or developments.
1. OPSUMIT® (macitentan) full Prescribing Information. Actelion Pharmaceuticals US, Inc. January 2019.
SOURCE Actelion Pharmaceuticals Ltd