Treatment of patients with achondroplasia in the Republic of Croatia – first experiences and results

Authors

  • Mijana Kero Klinički bolnički centar Split, Klinika za dječje bolesti, Zavod za hematologiju, onkologiju i genetiku Spinčićeva 1, 21 000 Split

DOI:

https://doi.org/10.13112/pc.1057

Keywords:

ACHONDROPLASIA; RECEPTOR, FIBROBLAST GROWTH FACTOR, TYPE 3; NATRIURETIC PEPTIDE, C-TYPE

Abstract

Achondroplasia (ACH) is an autosomal dominant genetic disorder primarily characterized by disproportionate short stature with normal cognitive development. The average final height of adult males with ACH is 130 cm, while for females, it is 125 cm. Individuals with ACH have an average life expectancy of approximately 10 years shorter than the general population due to complications associated with the underlying condition. The most severe complications that contribute to reduced life expectancy include an increased risk of sudden death in childhood due to potential medullary compression at the craniocervical junction, and in adulthood, cardiovascular diseases, and obesity. Until recently, the treatment of patients with achondroplasia was exclusively symptomatic and did not improve physical capabilities or life quality. Since January 2024, patients with ACH in the Republic of Croatia have started treatment with the drug vosoritide, which targets the cause of the disease, namely the disturbance of enchondral ossification caused by a mutation in the FGFR3 gene. Vosoritide is currently the only specific therapeutic option for treating achondroplasia, developed based on an understanding of the disease pathogenesis, with proven positive effects and an acceptable safety profile.

References

1. Legare JM. Achondroplasia. 1998 Oct 12 [Updated 2023 May 11]. In: Adam MP, Feldman J, Mirzaa GM, et al., editors. GeneReviews® [Internet]. Seattle (WA): University of Washington, Seattle; 1993-2024. Available from: https://www.ncbi.nlm.nih.gov/books/NBK1152/

2. Foreman PK, van Kessel F, van Hoorn R, van den Bosch J, Shediac R, Landis S. Birth prevalence of achondroplasia: A systematic literature review and meta-analysis. Am J Med Genet A. 2020 Oct;182(10):2297-2316.

3. Pauli RM. Achondroplasia: a comprehensive clinical review. Orphanet J Rare Dis. 2019 Jan 3;14(1):1.

4. Leiva-Gea A, Martos Lirio MF, Barreda Bonis AC, et al. Achondroplasia: Update on diagnosis, follow-up and treatment. An Pediatr (Engl Ed). 2022 Dec;97(6):423.e1-423.e11.

5. L'Hôte CG, Knowles MA. Cell responses to FGFR3 signalling: growth, differentiation and apoptosis. Exp Cell Res. 2005;304:417-31.

6. Cormier-Daire V, AlSayed M, Ben-Omran T,et al. The first European consensus on principles of management for achondroplasia. Orphanet J Rare Dis. 2021;16:333.

7. Coi A, Santoro M, Garne E, et al. Epidemiology of achondroplasia: a population-based study in Europe. Am J Med Genet Part A. 2019;179:1–8.

8. Merker A, Neumeyer L, Hertel NT, et al. Growth in achondroplasia: Development of height, weight, head circumference, and body mass index in a European cohort. Am J Med Genet A. 2018;176:1723-1734.

9. Neumeyer L, Merker A, Hagenäs L. Clinical charts for surveillance of growth and body proportion development in achondroplasia and examples of their use. Am J Med Genet A. 2021 Feb;185(2):401-412. doi: 10.1002/ajmg.a.61974.

10. Savarirayan R, Ireland P, Irving M, et al. International Consensus Statement on the diagnosis, multidisciplinary management and lifelong care of individuals with achondroplasia. Nat Rev Endocrinol. 2022;18:173-189.

11. Bodensteiner JB. Neurological Manifestations of Achondroplasia. Curr Neurol Neurosci Rep. 2019;19:105.

12. Wynn J, King TM, Gambello MJ, Waller DK, Hecht JT. Mortality in achondroplasia study: a 42-year follow-up. Am J Med Genet A. 2007;143A:2502-11.

13. Hecht JT, Francomano CA, Horton WA, Annegers JF. Mortality in achondroplasia. Am J Hum Genet. 1987;41(3):454-64.

14. Zaffanello M, Cantalupo G, Piacentini G, et al. Sleep disordered breathing in children with achondroplasia. World J Pediatr. 2017;13:8-14.

15. Hoover-Fong J, Scott CI, Jones MC. Health Supervision for People With Achondroplasia. Pediatrics. 2020;145:e20201010.

16. Cheung MS, Irving M, Cocca A, Santos R, et al. Achondroplasia Foramen Magnum Score: screening infants for stenosis. Arch Dis Child. 2021;106:180-184.

17. Savarirayan R, Wilcox WR, Harmatz P,et al. Vosoritide therapy in children with achondroplasia aged 3-59 months: a multinational, randomised, double-blind, placebo-controlled, phase 2 trial. Lancet Child Adolesc Health. 2024;8:40-50.

18. Savarirayan R, Wilcox WR, Harmatz P, et al. A Randomized Controlled Trial of Vosoritide in Infants and Toddlers with Achondroplasia. Presented at the Endocrine Society’s 2022 Annual Meeting: June 11–14, 2022, Atlanta, GA, USA.

19. Ain MC, Shirley ED, Pirouzmanesh A, Skolasky RL, Leet AI. Genu varum in achondroplasia. J Pediatr Orthop. 2006;26:375-9.

20. Irving M, Savarirayan R, Arundel P, et al. Associations between height and health-related quality of life (HRQoL) and functional independence in children with achondroplasia. Presented at the 59th Annual Meeting of the European Society of Paediatric Endocrinology: September 22–26, 2021.

21. Paley D. Extensive limb lengthening for achondroplasia and hypochondroplasia. Children (Basel). 2021;8:540.

22. Savarirayan R, Irving M, Bacino CA, et al. C-type natriuretic peptide analogue therapy in children with achondroplasia. N Engl J Med. 2019 Jul 4;381(1):25-35.

23. Lorget F, Kaci N, Peng J, Bet al. Evaluation of the therapeutic potential of a CNP analog in a Fgfr3 mouse model recapitulating achondroplasia. Am J Hum Genet. 2012 Dec 7;91(6):1108-14.

24. Horton WA, Hall JG, Hecht JT. Achondroplasia. Lancet. 2007 Jul 14;370(9582):162-72.

25. Duggan S. Vosoritide: first approval. Drugs. 2021;81:2057-62.

26. Chan ML, Qi Y, Larimore K, et al. Pharmacokinetics and exposure-response of vosoritide in children with achondroplasia. Clin Pharmacokinet. 2022;61:263-80.

27. Semler O, Cormier-Daire V, Lausch E, et al. Vosoritide therapy in children with achondroplasia: early experience and practical considerations for clinical practice. Adv Ther. 2024;41:198-214.

28. Savarirayan R, Tofts L, Irving M, et al. Safe and persistent growth-promoting effects of vosoritide in children with achondroplasia: 2-year results from an open-label, phase 3 extension study. Genet Med. 2021;23:2443-7.

29. Hoover-Fong J, Savarirayan R, Tofts L, et al. Persistent and stable growth-promoting effects of vosoritide in children with achondroplasia for up to 3.5 years: results from an ongoing phase 3 extension study. Presented at the 2023 ACMG Annual Clinical Genetics Meeting; March 14–18, 2023; Salt Lake City, UT, USA.

30. Hoover-Fong J, Irving M, Bacino C, et al. eP151 - Vosoritide for children with achondroplasia: a 60-month update from an ongoing phase 2 clinical trial. Mol Genet Metab. 2021;132(Suppl 1):S101. Presented at the ACMG Annual Clinical Genetics Meeting; April 13–16, 2021.

31. European Medicines Agency. Voxzogo: EPAR - Medicine overview. Available from: https://www.ema.europa.eu/en/medicines/human/EPAR/VOXZOGO

32. Savarirayan R, Irving M, Harmatz P, et al. Growth parameters in children with achondroplasia: a 7-year, prospective, multinational, observational study. Genet Med. 2022;24:2444-52.

Published

2025-04-02

How to Cite

Kero, M. (2025). Treatment of patients with achondroplasia in the Republic of Croatia – first experiences and results. Paediatria Croatica, 69(Suppl 2), 108-115. https://doi.org/10.13112/pc.1057

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