Abstract
Subcutaneous asfotase alfa (Strensiq™), a first-in-class bone-targeted human recombinant tissue-nonspecific alkaline phosphatase (TNSALP) replacement therapy, is approved in the USA for the treatment of patients with perinatal/infantile- or juvenile-onset hypophosphatasia (HPP). In clinical trials, asfotase alfa was an effective and generally well tolerated treatment for perinatal/infantile- and juvenile onset-HPP through at least 3 and 5 years’ treatment, respectively. Relative to untreated age-matched, juvenile-onset-HPP historical control cohorts, survival and ventilation-free survival were significantly prolonged in asfotase alfa-treated patients, consequent to preceding improvements in bone mineralization.
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References
Scott LJ. Asfoatse alfa: a review in paediatric-onset hypophosphatasia. Drugs. 2016;76(2):255–62.
Millán JL, Whyte MP. Alkaline phosphatase and hypophosphatasia. Calcif Tissue Int. 2015;. doi:10.1007/s00223-015-0079-1.
Rockman-Greenberg C. Hypophosphatasia. Pediatr Endocrinol Rev. 2013;10(Suppl 2):380–8.
Bianchi ML. Hypophosphatasia: an overview of the disease and its treatment. Osteoporos Int. 2015;26:2743–57.
Weber T, Sawyer E, Moseley S, et al. Fracture and surgical burden in pediatric and adult patients with hypophosphatasia: results from patient-reported outcome surveys [abstract no. 516]. In: American Association of Clinical Endocrinologists 24th Annual Scientific and Clinical Congress. 2015.
Weber T, Sawyer E, Moseley S, et al. Burden of disease in children with hypophosphatasia: results from patient-reported surveys [abstract no. P119]. In: 7th International Conference on Children’s Bone Health. 2015.
Whyte M, Leung E, Wilcox W, et al. Hypophosphatasia: a retrospective natural history study of the severe perinatal and infantile forms [abstract no. 200]. In: Joint meeting of the Pediatric Academic Societies (PAS) and the Asian Society for Pediatric Research 2014.
Wenkert D, McAlister WH, Coburn SP, et al. Hypophosphatasia: nonlethal disease despite skeletal presentation in utero (17 new cases and literature review). J Bone Miner Metab. 2011;26(10):2389–98.
Fraser D. Hypophosphatasia. Am J Med. 1957;22(5):730–46.
Greenberg CR, Taylor CLD, Haworth JC, et al. A homoallelic Gly317 → Asp mutation in APL causes the perinatal (lethal) form of hypophosphatasia in Canadian Mennonites. Genomics. 1993;17(1):215–7.
Leung ECW, Mhanni AA, Reed M, et al. Outcome in perinatal hypophosphatasia in Manitoba Mennonites: a retrospective cohort analysis. JIMD Rep. 2013;11:73–8.
Mornet E. Hypophosphatasia. Orphanet J Rare Dis. 2007;2(40).
Alexion Pharmaceuticals I. Strensiq™ (asfotase alfa) injection, for subcutaneous use; US prescribing information. 2015. http://alxn.com/Documents/strensiq_pi-10-2015.aspx. Accessed 3 Dec 2015.
Millán JL, Plotkin H. Hypophosphatasia: pathophysiology and treatment. Actual Osteol. 2012;8(3):164–82.
Nishioka T, Tomatsu S, Gutierrez MA, et al. Enhancement of drug delivery to bone:characterization of human tissue-nonspecific alkaline phosphatase tagged with an acidic oligopeptide. Mol Genet Metab. 2006;88(3):244–55.
McKee MD, Nakano Y, Masica DL, et al. Enzyme replacement therapy prevents dental defects in a model of hypophosphatasia. J Dent Res. 2011;90(4):470–6.
Millán JL, Narisawa S, Lemire I, et al. Enzyme replacement therapy for murine hypophosphatasia. J Bone Miner Res. 2008;23(6):777–87.
Yadav MC, de Oliveira RC, Foster BL, et al. Enzyme replacement prevents enamel defects in hypophosphatasia mice. J Bone Miner Res. 2012;27(8):1722–34.
Yadav MC, Lemire I, Leonard P, et al. Dose response of bone-targeted enzyme replacement for murine hypophosphatasia. Bone. 2011;49(2):250–6.
Whyte MP, Greenberg CR, Salman NJ, et al. Enzyme-replacement therapy in life-threatening hypophosphatasia. N Engl J Med. 2012;366(10):904–13.
Whyte MP, Rockman-Greenberg C, Ozono K, et al. Asfotase alfa treatment improves survival for perinatal and infantile hypophosphatasia. J Clin Endocrinol Metab. 2015;. doi:10.1210/jc.2015-3462.
Hofmann C, Rockman-Greenberg C, Harmatz P, et al. Improvement in bone manifestations and respiratory status in infants and young children with HPP treated with asfotase alfa: an update on the ENB-010-10 trial [abstract]. Bone Abstracts. 2015;4:OC18.
Greenberg CR, Vockley J, Harmatz P, et al. Asfotase alfa improves skeletal mineralization and respiratory function in infants and young children with hypophosphatasia: results from up to 12 months’ treatment [abstract no. FC20-1488]. Horm Res. 2013;80(Suppl 1):70.
Whyte M, Leung E, Wilcox W, et al. Hypophosphatasia: a retrospective natural history study of the severe perinatal and infantile forms [abstract no. P364]. Bone Abstracts. 2014;3.
Whyte M, Simmons J, Bishop N, et al. Asfotase alfa: sustained efficacy and tolerability in infants and young children with life-threatening hypophosphatasia [abstract no. 69 plus poster]. In: Joint Meeting of the Pediatric Academic Societies (PAS) and the Asian Society for Pediatric Research. 2014.
Madson KL, Rockman-Greenberg C, Whyte MP, et al. Asfotase alfa: long-term safety and efficacy in children with hypophosphatasia [abstract no. 3808.202 plus poster]. In: Pediatric Academic Societies Annual Meeting 2014.
Whyte MP, Madson KL, Munns CF, et al. A retrospective, multi-national, non-interventional, natural history study of the childhood form of hypophosphatasia [abstract]. In: Endocrine Society Annual Meeting. 2015.
Madson KL, Phillips D, Rockman-Greenberg C, et al. Improved functional mobility with asfotase alfa treatment in childhood hypophosphatasia [abstract no. MO0059]. In: American Society of Bone and Mineral Research 37th Annual Meeting. 2015.
Phillips D, Griffin D, Przybylski T, et al. Gait assessment in children with childhood hypophosphatasia: impairments in muscle strength and physical function [abstract no. P103 plus poster]. Bone Abstracts. 2015;4.
Phillips D, Griffin D, Przybylski T, et al. A modified performance-oriented mobility assessment tool for assessing clinically relevant gait impairments and change in children with hypophosphatasia: development and validation [abstract no. P136]. In: 7th International Conference on Children’s Bone Health. 2015.
Madson K, Rockman-Greenberg C, Melian A, et al. Asfotase alfa: sustained improvements in hypophosphatasia-related rickets, physical function, and pain during 3 years of treatment for severely affected children [abstract no. 1081 plus poster]. In: 36th Annual Meeting of the American Society for Bone and Mineral Research. 2014.
Kishnani P, Langman C, Linglart A, et al. A longitudinal, prospective, long-term registry of patients with hypophosphatasia [abstract no. P154]. In: 7th International Conference on Children’s Bone Health. 2015.
Acknowledgments
The review was adapted and updated from Drugs 2016;76(2);255–262 [1]. During the peer review process, the manufacturer of asfotase alfa was offered an opportunity to review this article. Changes resulting from comments received were made on the basis of scientific and editorial merit.
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The preparation of this review was not supported by any external funding.
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Lesley Scott is a salaried employee of Adis/Springer, is responsible for the article content and declares no relevant conflicts of interest.
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The manuscript was reviewed by: M. L. Bianchi, Experimental Laboratory for Children’s Bone Metabolism Research, Bone Metabolism Unit, Istituto Auxologico Italiano IRCCS, Milan, Italy; C. Hofmann, Children’s Hospital University of Wurzburg, Wurzburg, Germany; C. R. Rockman - Greenberg, Department of Paediatrics and Child Health, University of Manitoba, Winnipeg, Canada.
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Scott, L.J. Asfotase Alfa in Perinatal/Infantile-Onset and Juvenile-Onset Hypophosphatasia: A Guide to Its Use in the USA. BioDrugs 30, 41–48 (2016). https://doi.org/10.1007/s40259-016-0161-x
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DOI: https://doi.org/10.1007/s40259-016-0161-x