Canadian labelling for all JAK inhibitors to include risks of serious heart-related problems, fatal blood clots and cancer

The Canadian labelling for all Janus Kinase (JAK) inhibitors is being updated to include the risks of serious heart-related problems, fatal blood clots and cancer. This is being done as a precautionary measure. To date, Canadian labelling for the drugs Cibinqo, Inrebic, Olumiant, Rinvoq and Xeljanz/Xeljanz XR have been revised. Health Canada is working with the manufacturer of Jakavi to update its Canadian labelling. JAK inhibitors are prescription drugs authorized for sale in Canada for various inflammatory disorders, certain blood cancers and graft-versus-host disease. These labelling updates are the result of a number of safety reviews conducted by Health Canada. In 2020 and 2021 , Health Canada assessed and confirmed the risks of serious heart-related problems, fatal blood clots, and cancer with Xeljanz/Xeljanz XR. The Department also assessed whether these risks would apply to Olumiant and Rinvoq, which are also used for inflammatory conditions. Based on these findings and how these drugs work, Health Canada cannot rule out these risks for other JAK inhibitors. Therefore, as a precautionary measure, Health Canada is working with manufacturers to ensure Canadian labelling of all JAK inhibitors includes these risks. Health Canada will continue to monitor safety information on JAK inhibitors, as it does for all health products on the Canadian market, to identify and assess potential harms. The Department will take appropriate and timely action should new health risks be identified.

Labelling

Talk to your health care professional for more details about this new safety information. Talk to your health care professional about possible heart disease risk factors before starting a JAK inhibitor. Contact your health care professional immediately and stop taking your JAK inhibitor if you develop symptoms of a heart problem. Symptoms may include: new or worsening chest pain; shortness of breath; irregular heartbeats; or swelling of the legs. Talk to your health care professional if you have or have had any type of cancer before taking a JAK inhibitor. Talk to your healthcare professional if you are a current or past smoker. Be aware that blood clots in the veins of the arms or legs (deep vein thrombosis), arteries (arterial thrombosis) or lungs (pulmonary embolism) can happen in some patients taking a JAK inhibitor. This may be life-threatening and can cause death. Stop taking your JAK inhibitor and seek immediate medical help if you develop any symptoms of a blood clot in your arms or legs (such as swelling, pain or tenderness in the arm or leg), or your lungs (such as sudden unexplained chest pain or shortness of breath).

Janus Kinase (JAK) inhibitors, including: Cibinqo, Inrebic, Jakavi, Olumiant, Rinvoq and Xeljanz/Xeljanz XR.

RA-72146