Assessment of the Efficacy of Calcium Dobesilate vs. Placebo on SARS-CoV-2 Viral Load Amongst Outpatients With COVID-19.

Summary

The purpose of this study is to evaluate the efficacy and safety of CaD in reducing SARS-CoV-2 viral load in non-hospitalized adult patients diagnosed with COVID-19, documented with a positive SARS-CoV-2 PCR and with the occurrence of COVID-19 symptoms.

Timeline

Start

2022-05-17

Primary completion

2023-11-10

Completion

2024-02-05

Publications

• Background Zhou Y, Yang Q, Chi J, Dong B, Lv W, Shen L, Wang Y. Comorbidities and the risk of severe or fatal outcomes associated with coronavirus disease 2019: A systematic review and meta-analysis. Int J Infect Dis. 2020 Oct;99:47-56. doi: 10.1016/j.ijid.2020.07.029. Epub 2020 Jul 25.
• Background Guan WJ, Liang WH, Zhao Y, Liang HR, Chen ZS, Li YM, Liu XQ, Chen RC, Tang CL, Wang T, Ou CQ, Li L, Chen PY, Sang L, Wang W, Li JF, Li CC, Ou LM, Cheng B, Xiong S, Ni ZY, Xiang J, Hu Y, Liu L, Shan H, Lei CL, Peng YX, Wei L, Liu Y, Hu YH, Peng P, Wang JM, Liu JY, Chen Z, Li G, Zheng ZJ, Qiu SQ, Luo J, Ye CJ, Zhu SY, Cheng LL, Ye F, Li SY, Zheng JP, Zhang NF, Zhong NS, He JX; China Medical Treatment Expert Group for COVID-19. Comorbidity and its impact on 1590 patients with COVID-19 in China: a nationwide analysis. Eur Respir J. 2020 May 14;55(5):2000547. doi: 10.1183/13993003.00547-2020. Print 2020 May.
• Background Zaim S, Chong JH, Sankaranarayanan V, Harky A. COVID-19 and Multiorgan Response. Curr Probl Cardiol. 2020 Aug;45(8):100618. doi: 10.1016/j.cpcardiol.2020.100618. Epub 2020 Apr 28.
• Background Amraei R, Rahimi N. COVID-19, Renin-Angiotensin System and Endothelial Dysfunction. Cells. 2020 Jul 9;9(7):1652. doi: 10.3390/cells9071652.
• Background Suschek C, Kolb H, Kolb-Bachofen V. Dobesilate enhances endothelial nitric oxide synthase-activity in macro- and microvascular endothelial cells. Br J Pharmacol. 1997 Dec;122(7):1502-8. doi: 10.1038/sj.bjp.0701512.
• Background Zhou Y, Yuan J, Qi C, Shao X, Mou S, Ni Z. Calcium dobesilate may alleviate diabetes-induced endothelial dysfunction and inflammation. Mol Med Rep. 2017 Dec;16(6):8635-8642. doi: 10.3892/mmr.2017.7740. Epub 2017 Oct 9.
• Background Allain H, Ramelet AA, Polard E, Bentue-Ferrer D. Safety of calcium dobesilate in chronic venous disease, diabetic retinopathy and haemorrhoids. Drug Saf. 2004;27(9):649-60. doi: 10.2165/00002018-200427090-00003.
• Background Rabe E, Ballarini S, Lehr L; Doxium EDX09/01 Study Group. A randomized, double-blind, placebo-controlled, clinical study on the efficacy and safety of calcium dobesilate in the treatment of chronic venous insufficiency. Phlebology. 2016 May;31(4):264-74. doi: 10.1177/0268355515586097. Epub 2015 May 18.
• Background Liu J, Li S, Sun D. Calcium Dobesilate and Micro-vascular diseases. Life Sci. 2019 Mar 15;221:348-353. doi: 10.1016/j.lfs.2019.02.023. Epub 2019 Feb 12.
• Background Fernandez IS, Cuevas P, Angulo J, Lopez-Navajas P, Canales-Mayordomo A, Gonzalez-Corrochano R, Lozano RM, Valverde S, Jimenez-Barbero J, Romero A, Gimenez-Gallego G. Gentisic acid, a compound associated with plant defense and a metabolite of aspirin, heads a new class of in vivo fibroblast growth factor inhibitors. J Biol Chem. 2010 Apr 9;285(15):11714-29. doi: 10.1074/jbc.M109.064618. Epub 2010 Feb 9.
• Background Angulo J, Peiro C, Romacho T, Fernandez A, Cuevas B, Gonzalez-Corrochano R, Gimenez-Gallego G, de Tejada IS, Sanchez-Ferrer CF, Cuevas P. Inhibition of vascular endothelial growth factor (VEGF)-induced endothelial proliferation, arterial relaxation, vascular permeability and angiogenesis by dobesilate. Eur J Pharmacol. 2011 Sep 30;667(1-3):153-9. doi: 10.1016/j.ejphar.2011.06.015. Epub 2011 Jun 22.
• Background Angulo J, Cuevas P, Cuevas B, El Youssef M, Fernandez A, Martinez-Salamanca E, Gonzalez-Corrochano R, Gimenez-Gallego G. Diacetyloxyl derivatization of the fibroblast growth factor inhibitor dobesilate enhances its anti-inflammatory, anti-angiogenic and anti-tumoral activities. J Transl Med. 2015 Feb 1;13:48. doi: 10.1186/s12967-015-0413-4.
• Background Njau F, Shushakova N, Schenk H, Wulfmeyer VC, Bollin R, Menne J, Haller H. Calcium dobesilate reduces VEGF signaling by interfering with heparan sulfate binding site and protects from vascular complications in diabetic mice. PLoS One. 2020 Jan 14;15(1):e0218494. doi: 10.1371/journal.pone.0218494. eCollection 2020.
• Background Yin XX, Zheng XR, Peng W, Wu ML, Mao XY. Vascular Endothelial Growth Factor (VEGF) as a Vital Target for Brain Inflammation during the COVID-19 Outbreak. ACS Chem Neurosci. 2020 Jun 17;11(12):1704-1705. doi: 10.1021/acschemneuro.0c00294. Epub 2020 Jun 2.
• Background Clausen TM, Sandoval DR, Spliid CB, Pihl J, Perrett HR, Painter CD, Narayanan A, Majowicz SA, Kwong EM, McVicar RN, Thacker BE, Glass CA, Yang Z, Torres JL, Golden GJ, Bartels PL, Porell RN, Garretson AF, Laubach L, Feldman J, Yin X, Pu Y, Hauser BM, Caradonna TM, Kellman BP, Martino C, Gordts PLSM, Chanda SK, Schmidt AG, Godula K, Leibel SL, Jose J, Corbett KD, Ward AB, Carlin AF, Esko JD. SARS-CoV-2 Infection Depends on Cellular Heparan Sulfate and ACE2. Cell. 2020 Nov 12;183(4):1043-1057.e15. doi: 10.1016/j.cell.2020.09.033. Epub 2020 Sep 14.
• Background Bermejo-Jambrina M, Eder J, Kaptein TM, van Hamme JL, Helgers LC, Vlaming KE, Brouwer PJM, van Nuenen AC, Spaargaren M, de Bree GJ, Nijmeijer BM, Kootstra NA, van Gils MJ, Sanders RW, Geijtenbeek TBH. Infection and transmission of SARS-CoV-2 depend on heparan sulfate proteoglycans. EMBO J. 2021 Oct 18;40(20):e106765. doi: 10.15252/embj.2020106765. Epub 2021 Sep 23.
• Background Moore JB, June CH. Cytokine release syndrome in severe COVID-19. Science. 2020 May 1;368(6490):473-474. doi: 10.1126/science.abb8925. Epub 2020 Apr 17. No abstract available.
• Background Hoffmann M, Kruger N, Schulz S, Cossmann A, Rocha C, Kempf A, Nehlmeier I, Graichen L, Moldenhauer AS, Winkler MS, Lier M, Dopfer-Jablonka A, Jack HM, Behrens GMN, Pohlmann S. The Omicron variant is highly resistant against antibody-mediated neutralization: Implications for control of the COVID-19 pandemic. Cell. 2022 Feb 3;185(3):447-456.e11. doi: 10.1016/j.cell.2021.12.032. Epub 2021 Dec 24.
• Background Takashita E, Kinoshita N, Yamayoshi S, Sakai-Tagawa Y, Fujisaki S, Ito M, Iwatsuki-Horimoto K, Halfmann P, Watanabe S, Maeda K, Imai M, Mitsuya H, Ohmagari N, Takeda M, Hasegawa H, Kawaoka Y. Efficacy of Antiviral Agents against the SARS-CoV-2 Omicron Subvariant BA.2. N Engl J Med. 2022 Apr 14;386(15):1475-1477. doi: 10.1056/NEJMc2201933. Epub 2022 Mar 9. No abstract available.
• Salamun J, Da Silva T, Ustero P, Gosmain Y, Guessous I, Calmy A, Spechbach H. Study protocol for assessment of the efficacy of calcium dobesilate versus placebo on SARS-CoV-2 viral load in outpatients with COVID-19 (CADOVID study): a randomised, placebo-controlled, double-blind, monocentric phase II trial. BMJ Open. 2024 May 8;14(5):e079574. doi: 10.1136/bmjopen-2023-079574.

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Indications