Adalimumab

Adalimumab is a recombinant human monoclonal 1NF antibody that binds specifically to 1NF-a and blocks its interaction with endogenous cell-surface 1NF receptors.

Uses and Administration
Adalimumab is a recombinant human monoclonal 1NF antibody that binds specifically to 1NF-a and blocks its interaction with endogenous cell-surface 1NF receptors. It also modulates biological responses that are induced or regulated by 1NF. Elevated levels of 1NF have been found in the affected tissues and fluids of patients with rheumatoid arthritis, axial spondyloarthritis, ankylosing spondylitis, and psoriatic arthritis, plaque psoriasis (below), and Crohn's disease and ulcerative colitis. Adalimumab is described as a biological disease modifying antirheumatic drug (DMARD).
Adalimumab is used in the treatment of moderate to severe, active rheumatoid arthritis and active and progressive psoriatic arthritis. In the UK, it is licensed for use in patients who have had an inadequate response to standard DMARDs, although in severe progressive rheumatoid arthritis it may be used in patients not previously treated with methotrexate; in the USA, it is licensed for use in early disease. Adalimumab is also used in the treatment of active ankylosing spondylitis: UK licensed product information recommends that it should only be used in patients with severe disease who have had an inadequate response to conventional treatment; however, in the USA it may be used in early disease. In the UK, it is also used in the treatment of severe axial spondyloarthritis without radiographic evidence of ankylosing spondylitis in patients who have had an inadequate response to, or are intolerant of, NSAIDs. For all the above indications, it is given by subcutaneous injection in a dose of 40 mg every other week. In the treatment of rheumatoid arthritis, UK licensed product information recommends that adalimumab should be given with methotrexate, although monotherapy may be used where treatment with methotrexate would be inappropriate. When used as monotherapy in rheumatoid arthritis, some patients may benefit from increasing the dose to 40 mg every week. In the UK, NICE recommends that adalimumab be stopped if there is no adequate response after 6 months for the treatment of rheumatoid arthritis, and after 12 weeks for psoriatic arthritis or ankylosing spondylitis.

Adalimumab is used in the treatment of moderate to severe, active Crohn's disease and ulcerative colitis unresponsive to conventional treatment; it may also be used in patients with Crohn's disease who have relapsed while taking infliximab. For both these indications, patients may be given an initial dose of 160 mg subcutaneously on day 1 (given as four 40-mg injections in one day or two 40-mg injections daily for 2 consecutive days), followed by 80 mg two weeks later (day 15 ) . After a further two weeks (day 29), a maintenance dose of 40 mg every other week may be started. There is a high risk of adverse effects associated with the above induction dose, consequently, in those with Crohn's disease who do not require a more rapid response to therapy, UK licensed product information advises that a lower dose of 80 mg may be given initially, followed by 40 mg 2 weeks later; thereafter, usual maintenance doses may be given. A clinical response is usually seen within 8 or 12 weeks of starting treatment for ulcerative colitis or Crohn's disease, respectively; for both indications, those patients who relapse while on adalimumab may benefit from increasing the maintenance dose to 40 mg every week.
In the treatment of moderate to severe chronic plaque psoriasis in patients unresponsive to, or intolerant of, conventional systemic therapy including phototherapy, the recommended initial dose of adalimumab is 80 mg subcutaneously; this may be followed by a maintenance dose of 40 mg subcutaneously on alternate weeks, starting 1 week after the initial dose. A clinical response is usually seen within 16 weeks of starting treatment.

For the uses of adalimumab in children, and recommended doses, see below.
Administration in children
Adalimumab is used in the treatment of active polyarticular juvenile idiopathic arthritis in children. In the UK, it is licensed for use in those aged 2 years and older who have had an inadequate response to standard disease-modifying antirheumatic drugs (DMARDs). The dose in children aged 2 to 12 years is calculated according to body-surface and is given subcutaneously: 24 mg/m2 up to a maximum dose of 20 mg in those younger than 4 years of age and 40 mg in those aged 4 to 12 years may be given every other week. Older children may receive 40 mg every other week regardless of body-surface area. licensed product information also recommends that it should be given with methotrexate, although monotherapy may be used where treatment with methotrexate is inappropriate. In the USA, adalimumab is licensed for use in children aged 4 to 17 years to reduce the signs and symptoms of moderately to severely active disease; the dose is calculated according to body weight and is given subcutaneously: those weighing 15 kg to less than 30 kg should be given 20 mg every other week, while heavier children may receive 40 mg every other week.

In the UK, adalimumab is also licensed for the treatment of severe, active Crohn's disease in children aged 6 years and older who have had an inadequate response to conventional therapy, or who have contra-indications for or are intolerant of such treatments. The dose is given subcutaneously, according to body-weight: those weighing less than 40 kg should be given an initial dose of 80 mg on day 1, followed by 40 mg 2 weeks later (day 1 5). After a further 2 weeks (day 29), a maintenance dose of 20 mg every other week may be started. There is a high risk of adverse effects associated with the above induction dose, consequently, in those who do not require a more rapid response to therapy, licensed product information advises that a lower dose of 40 mg may be given initially, followed by 20 mg 2 weeks later; thereafter, usual maintenance doses may be given. Patients who have an insufficient response may benefit from increasing the maintenance dose to 20 mg every week. Heavier children may be given the usual adult dose for this indication.

Hidradenitis suppurativa
For mention of adalimumab having been used in the treatment of hidradenitis suppurativa
Adalimumab is used in the management of inflammatory bowel disease such as Crohn's disease and ulcerative colitis. It has also been tried in children 10-12 years old.
1. Plosker GL, Lyseng-Williamson KA. Adalimumab: in Crohn's disease. BioDruos 2007; II: 125-32.
2. NICE. Infliximab and adalimumab for the treatment of Crohn's disease (includes a review of NICE technology appraisal guidance 40): Technology Appraisal Guidance 187 (issued May 2010). Available at: http: / /www.nice.org.uk/nicemedia/live I 1 2 9 8 5/48 5 52/485 5 2 . pdf (accessed 19/10/IO)
3. Huang ML, et al. Efficacy and safety of adalimumab in Crohn's disease: meta-analysis of placebo-controlled trials. J Dis Dis 2011; 12: 165-72.
4. Guidi L, et al. Update on the management of inflammatory bowel disease: specific role of adalimumab. Clin Exp Gastroenterol 2011; 4: 1 6 3-72.
5. Wasan SK, Kane SV. Adalimumab for the treatment of inflammatory bowel disease. Expert Rev Gastroenterol Hepato/2011; 5: 679-84.
6. Reinisch W, et al. Adalimumab for induction of clinical remission in moderately to severely active ulcerative colitis: results of a randomized controlled trial. Gut 20 l l ; 60: 780-7.
7. Sandborn WJ, et al. Adalimumab induces and maintains clinical remission in patients with moderate-to-severe ulcerative colitis. Gastroenterolo9Y 2012; 142: 257-65.e1-3.
8. Burness CB, Keating GM. Adalimumab: a review of its use in the treatment of patients with ulcerative colitis. BioDruos 2013; 27: 247-62.
9. Panacdone R, et al. Adalimumab maintains remission of Crohn's disease after up to 4 years of treatment: data from CHARM and ADHERE. Aliment Pharmacal Ther 2013; 38: 1236-47.
10. Viola F, et al. Efficacy of adalimumab in moderate-to-severe pediatric Crohn's disease. Am J Gastroentero/ 2009; 104: 2566-71
11. Russell RK, et al. A British Society of Pediatric Gastroenterology, Hepatology and Nutrition survey of the effectiveness and safety of adalimumab in children with inflammatory bowel disease. Aliment Pharmacal Ther 20ll; 33: 946-53.
12. Hyams JS, et al. Safety and efficacy of adalimumab for moderate to severe Crohn's disease in children. Gastroenterology 2012; 143: 365-74.

Psoriasis
Adalimumab is used in the treatment of plaque psoriasis
I. NICE. Adalimumab for the treatment of adults with psoriasis: Technology Appraisal Guidance 146 (issued June 2008). Available at: http://www.nice.org.uk/nicemedia/pdf/TA146Guidance.pdf (accessed 25/07/08)
2. Papoutsaki M. et al. Adalimumab for the treatment of severe psoriasis and psoriatic arthritis. Expert Opin Bioi Ther 2008; 8: 363-70.
3. Traczewski P, Rudnicka L. Adalimumab in dermatology. Br J Clin Pharmacol 2008; 66: 6 18-25.
4. Croom KF, McCormack PL. Adalimumab: in plaque psoriasis. Am J Clin Dermatol 2009; 10: 43-50.
5. Iaconi A, et al. Psoriasis and its treatment with adalimumab. Expert Opin Biol Ther 2010; 10: 1 3 3-52.
6. Leonardi C, et al. Efficacy, safety and medication cost implications of adalimumab 40 mg weekly dosing in patients with psoriasis 7. Saraceno R, et al. Adalimumab in the treatment of plaque-type psoriasis and psoriatic arthritis. Expert Opin Biol Ther 2013; 13: 1325-34.

Rheumatoid arthritis
Some references to the use of adalimumab in rheumatoid arthritis (P-1 3.2) and juvenile idiopathic arthritis
I. Navarra-Sarabia F, et al. Adalimumab for treating rheumatoid arthritis. Available in The Cochrane Database of Systematic Reviews; Issue 3. Chichester: John Wiley; 2005 (accessed 13/06/08).
2. Cvetkovic RS, Scott LJ. Adalimumab: a review of its use in adult patients with rheumatoid arthritis. BioDrugs 2006; 20: 293-311.
3. Chen Y-F, et al. NHS Health Technology Assessment Programme. A systematic review of the effectiveness of adalimumab, etanercept and infliximab for the treatment of rheumatoid arthritis in adults and an economic evaluation of their cost-effectiveness (issued November 2006). Available at: http://www.hta.ac.uk/fullmono/mon1042.pdf (accessed 31 11/08)
4. Mease PJ. Adalimumab in the treatment of arthritis. Ther Clin RiskManag 2007; 3: 1 3 3-48.
5. NICE. Adalimmnab, ctanercept and infliximab for the treatment of rheumatoid arthritis (includes a review of technology appraisal guidance 36): Technology Appraisal Guidance 130 (issued October 2007). Available at: http://www .nicc.org. uk/nicemedia/pdfiT A l30guidance. pdf (accessed 03/ l l /08)
6. Lovell DJ, et a!. Pediatric Rheumatology Collaborative Study Group. Pediatric Rheumatology International Trials Organization. Adalimumab with or without methotrexate in juvenile rheumatoid arthritis. N Eng! J Med 2008; 359: 810-20.
7. NICE. Adalimumab, etanercept, infliximab, rituximab and abatacept for the treatment of rheumatoid arthritis after the failure of a TNF inhibitor (part review of NICE technology appraisal guidance 36 and review of NICE technology appraisal guidance 126 and 141 ): Technology Appraisal Guidance 1 9 5 ( issued August 2010). Available at: http://www.nice.org.uk/nicemedia/live/ 1 3 1 08/504 1 3 / 5041 3 .pdf (accessed 041 1 1 1 1 0 )
8. Wiens A, et al. Meta-analysis of the efficacy and safety of adalimumab, etanercept, and infliximab for the treatment of rheumatoid arthritis. Pharmacotherapy 2 0 1 0; 30: 339-'53.
9. Poddubnyy D, Rudwaleit M. Efficacy and safety of adalimumab treatment in patients with rheumatoid arthritis, ankylosing spondylitis and psoriatic arthritis. Expert Opin Drug Safety 2 0 l l ; 10: 655-73.

Spondyloarthropathies
References1-13 to the use of adali mumab in ankylosing spondylitis, axial spondyloarthritis, and psoriatic arthritis
1. Simpson D, Scott LJ. Adalimumab: in psoriatic arthritis. Drugs 2006; 66: 1487-96.
2. McLeod C, et al. NHS Health Technology Assessment Program - Ada!imum<lb, etanercept and infliximab for the treatment of ankylosing spondylitis: a systematic review and economic evaluation (issued August 2007). Available at; http://vvvvw.hta.ac.uk/fullmono/mon 1128.pdf (accessed 3 1 / 1 0/08)
3. Mease PJ. Adalimumab in the treatment of arthritis. Ther Clin Risk Manag 2007; 3: 1 3 3-48.
4. Papoutsaki M, et al. Adalimumab for the treatment of severe psoriasis and psoriatic arthritis. Expert Opin Biol 8: 363-70.
5. NICE. Adalimumab, etanercept and infliximab in ankylosing spondylitis: Technology Appraisal Guidance 143 (issued May 2008). Available at: http:/ twww .nice.org. uk/nicemedia/pdf/T A l43Guidance.pdf (accessed 3 1 / I 0/08)
6. Mease PJ, et al. Adalimumab for long-term treatment of psoriatic arthritis: 2-year data from the Adalimumab Effectiveness in Psoriatic Arthritis Trial (ADEPT). Ann Rheum Dis 2009; 68: 702-7. van der Heijde D, et a!. ATLAS Study Group. Adalimumab effectiveness for the treatment of ankylosing spondylitis is maintained for up to 2 years; long-term results from the ATLAS trial. Ann Rheum Dis 2009; 68: 922-9.
8. Poddubnyy DA, Rudwaleit M. Adalimumab for the treatment of psoriatic arthritis.
9. NICE. Etanercept, and adalimumab for the treatment of psoriatic arthritis (review of technology appraisal guidance 1 04 and 1 2 5 ): Technology Appraisal Guidance 199 (issued August 2010). Available at: http://www.nice.org.uk/nicemediallive/ 1 3 1 1 0/50422/50422.pdf (accessed 1 9 / l 0/lO)
lO. Poddubnyy D, Rudwaleit M. Efficacy and safety of adalimumab treatment in patients with rheumatoid arthritis, ankylosing spondylitis and psoriatic arthritis. Expert Opin Drug Safety 2011; 10: 655-73.
l l . Sieper J, et al. Efficacy and safety of adalimumab in patients with non-radiographic axial spondyloarthritis: results of a randomized placebo-controlled trial (ABILITY-I). Ann Rheum Dis 2012. Available at: doi: I 0 . 1 1 3 6/annrheumdis-2012-201766
12. Burness CB, Deeks ED. Adalimumab in non-radiographic axial
spondyloarthritis. Drugs 2012; 72: 2385-95.
13. Saraceno R, et al. Adalimumab in the treatment of plaque-type psoriasis and psoriatic arthritis. Expert Opin Biol Ther 2 0 1 3; 13: 1 325-34.

Uveitis
Adalimumab has been tried with some success in the treatment of idiopathic uveitis 1.2 (P- 1 6 1 5 . I ). Uveitis can also develop as a complication of other inflammatory disorders such as rheumatoid arthritis; treatment with adalimumab may improve ocular symptoms in addition to its effect on the primary disorder.
1. Adalirnumab therapy for childhood uveitis. .l 149: 572-5.
2. Hiester S, et al. Adalimumab in the therapy of uveitis in childhood. Br J Ophthalmol 2007; 91: 319-24.

Adverse Effects, Treatment, and Precautions
Injection site reactions including erythema, itching, pain, and swelling are the most common adverse reactions with adalimumab; however, most reactions are mild and do not result in drug withdrawal. Other common reactions include headache, rashes, back pain, hypertension, paraesthesias, increased alkaline phosphate levels, and cough. Autoantibodies to adalimumab have been detected. References:
1. Burmester GR, et al. Adalimumab: long-term safety in 23,458 patients from global clinical trials in rheumatoid arthritis, juvenile idiopathic arthritis, ankylosing spondylitis, psoriatic arthritis, psoriasis and Crohn's disease. Ann Rheum Dis 2012. Available at: doi: l 0. 1 l 36/annrheumdis- 20l l -2 0 I 244 Porphyria. The Drug Database for Acute Porphyria, compiled by the Norwegian Porphyria Center (NAPOS) and the Porphyria Center Sweden, classifies adalimumab as possibly porphyrinogenic; it should be used only when no safer alternative is available and precautions should be considered in vulnerable patients.1
2. The Drug Database for Acute Porphyria. Available at: http;//www.drugs-porphyria.org (accessed 15 / ll / 11)

Interactions
Methotrexate is reported to reduce the clearance of adalimumab by up to 44%, but the licensed product information for the latter states that dosage adjustment for either drug does not appear to be necessary.
Pharmacokinetics
Adalimumab is reported to have linear pharmacokinetics at usual dosages. After subcutaneous injection peak concentrations are reached in about 3 to 8 days and bioavailability is estimated to be 64%. The mean terminal half-life is about 2 weeks. Adalimumab crosses the placenta and is distributed into breast milk.

Single-ingredient Preparations
Arg.: Humira; Austral.: Humira; Austria: Humira; Belg.: Humira; Braz.: Humira; Canad.: Humira; Chile: Humira; China: Humira; Cz.: Humira; Denm.: Humira; Fin.: Humira; Fr.: Humira; Ger.: Humira; Gr.: Humira; Trudexa; Hong Kong: Humira; Hung.: Humira; Irl.: Humira; Israel: Humira; Ital.: Humira; Jpn: Humira; Malaysia: Humira; Mex.: Humira; Neth.: Hurnira; Norw.: Humira; NZ: Humira; Pol.: Humira; Port.: Humira; Rus.: Humira (XyMHpa); S.Afr.: Humira; Singapore: Humira; Spain: Humira; Swed.: Humira; Switz.: Humira; Turk.: Humira; UK: Humira; Ukr.: Humira (X)TMHpa); USA: Humira; Venez.: Humira.

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