Can Orencia cause cancer and if so what types. I have been on Orencia for 3 years and am concerned

Orencia is a man-made protein that prevents your body's immune system from attacking healthy tissues such as joints.
Orencia is used to treat the symptoms of rheumatoid arthritis, to slow the progression of joint damage, and to improve physical function.

This taken from Orencia fda monograph: https://www.drugs.com/pro/orencia.html#section-6
"Malignancies
In the placebo-controlled portions of the clinical trials (1955 patients treated with Orencia for a median of 12 months), the overall frequencies of malignancies were similar in the Orencia- and placebo-treated patients (1.3% and 1.1%, respectively). However, more cases of lung cancer were observed in Orencia-treated patients (4, 0.2%) than placebo-treated patients (0). In the cumulative Orencia clinical trials (placebo-controlled and uncontrolled, open-label) a total of 8 cases of lung cancer (0.21 cases per 100 patient-years) and 4 lymphomas (0.10 cases per 100 patient-years) were observed in 2688 patients (3827 patient-years). The rate observed for lymphoma is approximately 3.5-fold higher than expected in an age- and gender-matched general population based on the Surveillance, Epidemiology, and End Results Database.1 Patients with RA, particularly those with highly active disease, are at a higher risk for the development of lymphoma. Other malignancies included skin, breast, bile duct, bladder, cervical, endometrial, lymphoma, melanoma, myelodysplastic syndrome, ovarian, prostate, renal, thyroid, and uterine cancers [see Warnings and Precautions (5.6)]. The potential role of Orencia in the development of malignancies in humans is unknown."

I hope this is helpful. The last sentence is probably the most important.