Evaluation of the Efficacy, Safety, and Tolerability of Sarizotan in Rett Syndrome With Respiratory Symptoms

Summary

This study evaluates the safety, tolerability and efficacy of Sarizotan in reducing respiratory abnormalities in Rett Syndrome in an initial double blind 24 week period followed by an open label treatment phase of up to 168 weeks (the latter for patients with no safety and tolerability issues).

Timeline

Start

2016-10-26

Primary completion

2019-08-06

Completion

2020-05-04

Publications

• Background Abdala AP, Dutschmann M, Bissonnette JM, Paton JF. Correction of respiratory disorders in a mouse model of Rett syndrome. Proc Natl Acad Sci U S A. 2010 Oct 19;107(42):18208-13. doi: 10.1073/pnas.1012104107. Epub 2010 Oct 4.
• Background Abdala AP, Bissonnette JM, Newman-Tancredi A. Pinpointing brainstem mechanisms responsible for autonomic dysfunction in Rett syndrome: therapeutic perspectives for 5-HT1A agonists. Front Physiol. 2014 May 30;5:205. doi: 10.3389/fphys.2014.00205. eCollection 2014.
• Background Abdala AP, Lioy DT, Garg SK, Knopp SJ, Paton JF, Bissonnette JM. Effect of Sarizotan, a 5-HT1a and D2-like receptor agonist, on respiration in three mouse models of Rett syndrome. Am J Respir Cell Mol Biol. 2014 Jun;50(6):1031-9. doi: 10.1165/rcmb.2013-0372OC.
• Background Adams JA, Zabaleta IA, Stroh D, Sackner MA. Measurement of breath amplitudes: comparison of three noninvasive respiratory monitors to integrated pneumotachograph. Pediatr Pulmonol. 1993 Oct;16(4):254-8. doi: 10.1002/ppul.1950160408.
• Background Bloch KE, Li Y, Sackner MA, Russi EW. Breathing pattern during sleep disruptive snoring. Eur Respir J. 1997 Mar;10(3):576-86.
• Background Brouillette RT, Morrow AS, Weese-Mayer DE, Hunt CE. Comparison of respiratory inductive plethysmography and thoracic impedance for apnea monitoring. J Pediatr. 1987 Sep;111(3):377-83. doi: 10.1016/s0022-3476(87)80457-2.
• Background Byard RW. Forensic issues and possible mechanisms of sudden death in Rett syndrome. J Clin Forensic Med. 2006 Feb;13(2):96-9. doi: 10.1016/j.jcfm.2005.08.013. Epub 2005 Nov 2.
• Background Cantineau JP, Escourrou P, Sartene R, Gaultier C, Goldman M. Accuracy of respiratory inductive plethysmography during wakefulness and sleep in patients with obstructive sleep apnea. Chest. 1992 Oct;102(4):1145-51. doi: 10.1378/chest.102.4.1145.
• Background Clarenbach CF, Senn O, Brack T, Kohler M, Bloch KE. Monitoring of ventilation during exercise by a portable respiratory inductive plethysmograph. Chest. 2005 Sep;128(3):1282-90. doi: 10.1378/chest.128.3.1282.
• Background Collop NA, Anderson WM, Boehlecke B, Claman D, Goldberg R, Gottlieb DJ, Hudgel D, Sateia M, Schwab R; Portable Monitoring Task Force of the American Academy of Sleep Medicine. Clinical guidelines for the use of unattended portable monitors in the diagnosis of obstructive sleep apnea in adult patients. Portable Monitoring Task Force of the American Academy of Sleep Medicine. J Clin Sleep Med. 2007 Dec 15;3(7):737-47.
• Background Common Terminology Criteria for Adverse Events (CTCAE), Version 4.0, May 28, 2009 (v4.03 June 14, 2010), U.S. Department of Health and Human Services.
• Background FitzGerald PM, Jankovic J, Percy AK. Rett syndrome and associated movement disorders. Mov Disord. 1990;5(3):195-202. doi: 10.1002/mds.870050303.
• Background Guy W (Ed). Clinical Global Impressions. In ECDEU Assessment Manual for Psychopharmacology, revised, U.S. Department of Health, Education and Welfare Pub. No. (ADM) 76-338. Rockville, MD: NIMH, 1976, 217-222.
• Background Hammer J, Newth CJ, Deakers TW. Validation of the phase angle technique as an objective measure of upper airway obstruction. Pediatr Pulmonol. 1995 Mar;19(3):167-73. doi: 10.1002/ppul.1950190305.
• Background Julu PO, Kerr AM, Hansen S, Apartopoulos F, Jamal GA. Immaturity of medullary cardiorespiratory neurones leading to inappropriate autonomic reactions as a likely cause of sudden death in Rett's syndrome. Arch Dis Child. 1997 Nov;77(5):464-5. doi: 10.1136/adc.77.5.463c. No abstract available.
• Background Julu PO, Kerr AM, Apartopoulos F, Al-Rawas S, Engerstrom IW, Engerstrom L, Jamal GA, Hansen S. Characterisation of breathing and associated central autonomic dysfunction in the Rett disorder. Arch Dis Child. 2001 Jul;85(1):29-37. doi: 10.1136/adc.85.1.29.
• Background Julu PO, Engerstrom IW, Hansen S, Apartopoulos F, Engerstrom B, Pini G, Delamont RS, Smeets EE. Cardiorespiratory challenges in Rett's syndrome. Lancet. 2008 Jun 14;371(9629):1981-3. doi: 10.1016/S0140-6736(08)60849-1. No abstract available.
• Background Katz DM, Dutschmann M, Ramirez JM, Hilaire G. Breathing disorders in Rett syndrome: progressive neurochemical dysfunction in the respiratory network after birth. Respir Physiol Neurobiol. 2009 Aug 31;168(1-2):101-8. doi: 10.1016/j.resp.2009.04.017. Epub 2009 Apr 24.
• Background Kerr AM, Armstrong DD, Prescott RJ, Doyle D, Kearney DL. Rett syndrome: analysis of deaths in the British survey. Eur Child Adolesc Psychiatry. 1997;6 Suppl 1:71-4.
• Background Khwaja OS, Ho E, Barnes KV, O'Leary HM, Pereira LM, Finkelstein Y, Nelson CA 3rd, Vogel-Farley V, DeGregorio G, Holm IA, Khatwa U, Kapur K, Alexander ME, Finnegan DM, Cantwell NG, Walco AC, Rappaport L, Gregas M, Fichorova RN, Shannon MW, Sur M, Kaufmann WE. Safety, pharmacokinetics, and preliminary assessment of efficacy of mecasermin (recombinant human IGF-1) for the treatment of Rett syndrome. Proc Natl Acad Sci U S A. 2014 Mar 25;111(12):4596-601. doi: 10.1073/pnas.1311141111. Epub 2014 Mar 12.
• Background Konno K, Mead J. Measurement of the separate volume changes of rib cage and abdomen during breathing. J Appl Physiol. 1967 Mar;22(3):407-22. doi: 10.1152/jappl.1967.22.3.407. No abstract available.
• Background Landon C. Respiratory monitoring: Advantages of inductive plethysmography over impedance pneumograpy. VivoMetrics, VMLA-039-02, 2003.
• Background Leino K, Nunes S, Valta P, Takala J. Validation of a new respiratory inductive plethysmograph. Acta Anaesthesiol Scand. 2001 Jan;45(1):104-11. doi: 10.1034/j.1399-6576.2001.450116.x.
• Background Loube DI, Andrada T, Howard RS. Accuracy of respiratory inductive plethysmography for the diagnosis of upper airway resistance syndrome. Chest. 1999 May;115(5):1333-7. doi: 10.1378/chest.115.5.1333.
• Background Neul JL, Fang P, Barrish J, Lane J, Caeg EB, Smith EO, Zoghbi H, Percy A, Glaze DG. Specific mutations in methyl-CpG-binding protein 2 confer different severity in Rett syndrome. Neurology. 2008 Apr 15;70(16):1313-21. doi: 10.1212/01.wnl.0000291011.54508.aa. Epub 2008 Mar 12.
• Background Neul JL, Kaufmann WE, Glaze DG, Christodoulou J, Clarke AJ, Bahi-Buisson N, Leonard H, Bailey ME, Schanen NC, Zappella M, Renieri A, Huppke P, Percy AK; RettSearch Consortium. Rett syndrome: revised diagnostic criteria and nomenclature. Ann Neurol. 2010 Dec;68(6):944-50. doi: 10.1002/ana.22124.
• Background Neul JL, Glaze DG, Percy AK, Feyma T, Beisang A, Dinh T, Suter B, Anagnostou E, Snape M, Horrigan J, Jones NE. Improving Treatment Trial Outcomes for Rett Syndrome: The Development of Rett-specific Anchors for the Clinical Global Impression Scale. J Child Neurol. 2015 Nov;30(13):1743-8. doi: 10.1177/0883073815579707. Epub 2015 Apr 20.
• Background Sackner MA, Watson H, Belsito AS, Feinerman D, Suarez M, Gonzalez G, Bizousky F, Krieger B. Calibration of respiratory inductive plethysmograph during natural breathing. J Appl Physiol (1985). 1989 Jan;66(1):410-20. doi: 10.1152/jappl.1989.66.1.410.
• Background Weng SM, Bailey ME, Cobb SR. Rett syndrome: from bed to bench. Pediatr Neonatol. 2011 Dec;52(6):309-16. doi: 10.1016/j.pedneo.2011.08.002. Epub 2011 Nov 6.
• Gualniera L, Singh J, Fiori F, Santosh P. Emotional Behavioural and Autonomic Dysregulation (EBAD) in Rett Syndrome - EDA and HRV monitoring using wearable sensor technology. J Psychiatr Res. 2021 Jun;138:186-193. doi: 10.1016/j.jpsychires.2021.03.052. Epub 2021 Apr 7.

Drugs

Indications