We observed no difference between control Casp8flox/flox mice and B6, RIPK3–/– or RIPK3–/–Casp8flox/flox strains, though we detected slower induction of arthritis in RIPK3–/–Casp8flox/flox mice compared to RIPK3–/– mice. Here, RIPK3 is linked to Arthritis.