This site is intended for U.S. healthcare professionals.
Menu
Close
Menu
Close
Infections
Herpes Zoster
Malignancy
Thromboembolic Events
Urticaria
Example
Overall Infections
In the placebo-controlled trials, for up to 24 weeks, overall infections were reported in1:
Across clinical trials, including the long-term trial, overall infections were reported in 645 patients (50.71 per 100 patient-years) treated with LITFULO ≥50 mg (n=1521).1,2†‡
Serious Infections
In the placebo-controlled trials, for up to 24 weeks, serious infections were reported in 3 patients across all ritlecitinib doses studied (n=668).1
Across clinical trials, including the long-term trial, serious infections were reported in 12 patients (0.66 per 100 patient-years) treated with LITFULO ≥50 mg (n=1521).2†‡
The most common serious infections were related to appendicitis, COVID-19 infection (including pneumonia), and sepsis.1
In the placebo-controlled trials, for up to 24 weeks1:
Across all LITFULO clinical trials, including the long-term trial1,2†‡:
In the placebo-controlled trials, for up to 24 weeks, 1 malignancy (breast cancer) was reported (1.33 per 100 patient-years) with ritlecitinib higher dose (n=668) and none with placebo (n=213).1
Across clinical trials, including the long-term trial, malignancies (excluding NMSC) were reported in 7 patients (0.37 per 100 patient-years) treated with LITFULO ≥50 mg (n=1521).1,2†‡
Across clinical trials, including the long-term trial, 3 thromboembolic events were reported with LITFULO (n=1521)2:
In the placebo-controlled trials, for up to 24 weeks, urticaria was reported in1:
Across clinical trials, including the long-term trial, urticaria was reported in 76 patients (4.10 per 100 patient-years) treated with LITFULO ≥50 mg (n=1521).2†‡
The median time to onset of an initial event was 8 weeks; median duration of urticaria was 7 days. Most of the cases were mild to moderate in severity.1
Example
To report an adverse event, please call 1-800-438-1985
Pfizer for Professionals 1-800-505-4426
This site is intended only for U.S. healthcare professionals. The products discussed in this site may have different product labeling in different countries. The information provided is for educational purposes only.
© 2025 Pfizer Inc. All rights reserved.