Rheumatoid Arthritis Clinical Studies
The data described below reflect exposure to adalimumab in 2468 patients, including 2073 exposed for 6 months, 1497 exposed for greater than one year and 1380 in adequate and well-controlled studies (Studies RA-I, RA-II, RA-III, and RA-IV). Adalimumab was studied primarily in placebo-controlled trials and in long-term follow up studies for up to 36 months duration. The population had a mean age of 54 years, 77% were female, 91% were Caucasian and had moderately to severely active rheumatoid arthritis. Most patients received 40 mg adalimumab every other week [see Clinical Studies (14.1)].
Table 1 summarizes reactions reported at a rate of at least 5% in patients treated with adalimumab 40 mg every other week compared to placebo and with an incidence higher than placebo. In Study RA-III, the types and frequencies of adverse reactions in the second year open-label extension were similar to those observed in the one-year double-blind portion.
Table 1. Adverse Reactions Reported by ≥5% of Patients Treated with Adalimumab During Placebo-Controlled Period of Pooled RA Studies (Studies RA-I, RA-II, RA-III, and RA-IV) |
Adverse Reaction (Preferred Term) | Adalimumab 40 mg Subcutaneous Every Other Week (N=705) | Placebo (N=690) |
Respiratory | | |
Upper respiratory infection | 17% | 13% |
Sinusitis | 11% | 9% |
Flu syndrome | 7% | 6% |
Gastrointestinal | | |
Nausea | 9% | 8% |
Abdominal pain | 7% | 4% |
Laboratory Tests* | | |
Laboratory test abnormal | 8% | 7% |
Hypercholesterolemia | 6% | 4% |
Hyperlipidemia | 7% | 5% |
Hematuria | 5% | 4% |
Alkaline phosphatase increased | 5% | 3% |
Other | | |
Headache | 12% | 8% |
Rash | 12% | 6% |
Accidental injury | 10% | 8% |
Injection site reaction† | 8% | 1% |
Back pain | 6% | 4% |
Urinary tract infection | 8% | 5% |
Hypertension | 5% | 3% |
Juvenile Idiopathic Arthritis Clinical Studies
In general, the adverse reactions in the adalimumab-treated patients in the polyarticular juvenile idiopathic arthritis (JIA) trials (Studies JIA-I and JIA-II) [see Clinical Studies (14.2)] were similar in frequency and type to those seen in adult patients [see Warnings and Precautions (5), Adverse Reactions (6)]. Important findings and differences from adults are discussed in the following paragraphs.
In Study JIA-I, adalimumab was studied in 171 patients who were 4 to 17 years of age, with polyarticular JIA. Severe adverse reactions reported in the study included neutropenia, streptococcal pharyngitis, increased aminotransferases, herpes zoster, myositis, metrorrhagia, and appendicitis. Serious infections were observed in 4% of patients within approximately 2 years of initiation of treatment with adalimumab and included cases of herpes simplex, pneumonia, urinary tract infection, pharyngitis, and herpes zoster.
In Study JIA-I, 45% of patients experienced an infection while receiving adalimumab with or without concomitant MTX in the first 16 weeks of treatment. The types of infections reported in adalimumab-treated patients were generally similar to those commonly seen in polyarticular JIA patients who are not treated with TNF blockers. Upon initiation of treatment, the most common adverse reactions occurring in this patient population treated with adalimumab were injection site pain and injection site reaction (19% and 16%, respectively). A less commonly reported adverse event in patients receiving adalimumab was granuloma annulare which did not lead to discontinuation of adalimumab treatment.
In the first 48 weeks of treatment in Study JIA-I, non-serious hypersensitivity reactions were seen in approximately 6% of patients and included primarily localized allergic hypersensitivity reactions and allergic rash.
In Study JIA-I, 10% of patients treated with adalimumab who had negative baseline anti-dsDNA antibodies developed positive titers after 48 weeks of treatment. No patient developed clinical signs of autoimmunity during the clinical trial.
Approximately 15% of patients treated with adalimumab developed mild-to-moderate elevations of creatine phosphokinase (CPK) in Study JIA-I. Elevations exceeding 5 times the upper limit of normal were observed in several patients. CPK concentrations decreased or returned to normal in all patients. Most patients were able to continue adalimumab without interruption.
In Study JIA-II, adalimumab was studied in 32 patients who were 2 to <4 years of age or 4 years of age and older weighing <15 kg with polyarticular JIA. The safety profile for this patient population was similar to the safety profile seen in patients 4 to 17 years of age with polyarticular JIA.
In Study JIA-II, 78% of patients experienced an infection while receiving adalimumab. These included nasopharyngitis, bronchitis, upper respiratory tract infection, otitis media, and were mostly mild to moderate in severity. Serious infections were observed in 9% of patients receiving adalimumab in the study and included dental caries, rotavirus gastroenteritis, and varicella.
In Study JIA-II, non-serious allergic reactions were observed in 6% of patients and included intermittent urticaria and rash, which were all mild in severity.
Crohn's Disease Clinical Studies
Adults: The safety profile of adalimumab in 1478 adult patients with Crohn's disease from four placebo-controlled and two open-label extension studies [see Clinical Studies (14.5)] was similar to the safety profile seen in patients with RA.
Pediatric Patients 6 Years to 17 Years: The safety profile of adalimumab in 192 pediatric patients from one double-blind study (Study PCD-I) and one open-label extension study [see Clinical Studies (14.6)] was similar to the safety profile seen in adult patients with Crohn's disease.
During the 4-week open-label induction phase of Study PCD-I, the most common adverse reactions occurring in the pediatric population treated with adalimumab were injection site pain and injection site reaction (6% and 5%, respectively).
A total of 67% of children experienced an infection while receiving adalimumab in Study PCD-I.
These included upper respiratory tract infection and nasopharyngitis.
A total of 5% of children experienced a serious infection while receiving adalimumab in Study PCD-I. These included viral infection, device related sepsis (catheter), gastroenteritis, H1N1 influenza, and disseminated histoplasmosis.
In Study PCD-I, allergic reactions were observed in 5% of children which were all non-serious and were primarily localized reactions.
Hidradenitis Suppurativa Clinical Studies
Adalimumab has been studied in 727 subjects with hidradenitis suppurativa (HS) in three placebo-controlled studies and one open-label extension study [see Clinical Studies (14.9)]. The safety profile for subjects with HS treated with adalimumab weekly was consistent with the known safety profile of adalimumab.
Flare of HS, defined as ≥25% increase from baseline in abscesses and inflammatory nodule counts and with a minimum of 2 additional lesions, was documented in 22 (22%) of the 100 subjects who were withdrawn from adalimumab treatment following the primary efficacy timepoint in two studies.