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1. Hematopoietic Stem- and Progenitor-Cell Gene Therapy for Hurler Syndrome

Author

Gentner, B, Tucci, F, Galimberti, S, Fumagalli, F, De Pellegrin, M, Silvani, P, Camesasca, C, Pontesilli, S, Darin, S, Ciotti, F, Sarzana, M, Consiglieri, G, Filisetti, C, Forni, G, Passerini, L, Tomasoni, D, Cesana, D, Calabria, A, Spinozzi, G, Cicalese, M, Calbi, V, Migliavacca, M, Barzaghi, F, Ferrua, F, Gallo, V, Miglietta, S, Zonari, E, Cheruku, P, Forni, C, Facchini, M, Corti, A, Gabaldo, M, Zancan, S, Gasperini, S, Rovelli, A, Boelens, J, Jones, S, Wynn, R, Baldoli, C, Montini, E, Gregori, S, Ciceri, F, Valsecchi, M, la Marca, G, Parini, R, Naldini, L, Aiuti, A, Bernardo, M, Gentner, Bernhard, Tucci, Francesca, Galimberti, Stefania, Fumagalli, Francesca, De Pellegrin, Maurizio, Silvani, Paolo, Camesasca, Chiara, Pontesilli, Silvia, Darin, Silvia, Ciotti, Francesca, Sarzana, Marina, Consiglieri, Giulia, Filisetti, Chiara, Forni, Giulia, Passerini, Laura, Tomasoni, Daniela, Cesana, Daniela, Calabria, Andrea, Spinozzi, Giulio, Cicalese, Maria-Pia, Calbi, Valeria, Migliavacca, Maddalena, Barzaghi, Federica, Ferrua, Francesca, Gallo, Vera, Miglietta, Simona, Zonari, Erika, Cheruku, Patali S, Forni, Claudia, Facchini, Marcella, Corti, Ambra, Gabaldo, Michela, Zancan, Stefano, Gasperini, Serena, Rovelli, Attilio, Boelens, Jaap-Jan, Jones, Simon A, Wynn, Robert, Baldoli, Cristina, Montini, Eugenio, Gregori, Silvia, Ciceri, Fabio, Valsecchi, Maria G, la Marca, Giancarlo, Parini, Rossella, Naldini, Luigi, Aiuti, Alessandro, Bernardo, Maria-Ester, Gentner, B, Tucci, F, Galimberti, S, Fumagalli, F, De Pellegrin, M, Silvani, P, Camesasca, C, Pontesilli, S, Darin, S, Ciotti, F, Sarzana, M, Consiglieri, G, Filisetti, C, Forni, G, Passerini, L, Tomasoni, D, Cesana, D, Calabria, A, Spinozzi, G, Cicalese, M, Calbi, V, Migliavacca, M, Barzaghi, F, Ferrua, F, Gallo, V, Miglietta, S, Zonari, E, Cheruku, P, Forni, C, Facchini, M, Corti, A, Gabaldo, M, Zancan, S, Gasperini, S, Rovelli, A, Boelens, J, Jones, S, Wynn, R, Baldoli, C, Montini, E, Gregori, S, Ciceri, F, Valsecchi, M, la Marca, G, Parini, R, Naldini, L, Aiuti, A, Bernardo, M, Gentner, Bernhard, Tucci, Francesca, Galimberti, Stefania, Fumagalli, Francesca, De Pellegrin, Maurizio, Silvani, Paolo, Camesasca, Chiara, Pontesilli, Silvia, Darin, Silvia, Ciotti, Francesca, Sarzana, Marina, Consiglieri, Giulia, Filisetti, Chiara, Forni, Giulia, Passerini, Laura, Tomasoni, Daniela, Cesana, Daniela, Calabria, Andrea, Spinozzi, Giulio, Cicalese, Maria-Pia, Calbi, Valeria, Migliavacca, Maddalena, Barzaghi, Federica, Ferrua, Francesca, Gallo, Vera, Miglietta, Simona, Zonari, Erika, Cheruku, Patali S, Forni, Claudia, Facchini, Marcella, Corti, Ambra, Gabaldo, Michela, Zancan, Stefano, Gasperini, Serena, Rovelli, Attilio, Boelens, Jaap-Jan, Jones, Simon A, Wynn, Robert, Baldoli, Cristina, Montini, Eugenio, Gregori, Silvia, Ciceri, Fabio, Valsecchi, Maria G, la Marca, Giancarlo, Parini, Rossella, Naldini, Luigi, Aiuti, Alessandro, and Bernardo, Maria-Ester

Abstract

Background Allogeneic hematopoietic stem-cell transplantation is the standard of care for Hurler syndrome (mucopolysaccharidosis type I, Hurler variant [MPSIH]). However, this treatment is only partially curative and is associated with complications. Methods We are conducting an ongoing study involving eight children with MPSIH. At enrollment, the children lacked a suitable allogeneic donor and had a Developmental Quotient or Intelligence Quotient score above 70 (i.e., none had moderate or severe cognitive impairment). The children received autologous hematopoietic stem and progenitor cells (HSPCs) transduced ex vivo with an alpha-L-iduronidase (IDUA)-encoding lentiviral vector after myeloablative conditioning. Safety and correction of blood IDUA activity up to supraphysiologic levels were the primary end points. Clearance of lysosomal storage material as well as skeletal and neurophysiological development were assessed as secondary and exploratory end points. The planned duration of the study is 5 years. Results We now report interim results. The children's mean (+/- SD) age at the time of HSPC gene therapy was 1.9 +/- 0.5 years. At a median follow-up of 2.10 years, the procedure had a safety profile similar to that known for autologous hematopoietic stem-cell transplantation. All the patients showed prompt and sustained engraftment of gene-corrected cells and had supraphysiologic blood IDUA activity within a month, which was maintained up to the latest follow-up. Urinary glycosaminoglycan (GAG) excretion decreased steeply, reaching normal levels at 12 months in four of five patients who could be evaluated. Previously undetectable levels of IDUA activity in the cerebrospinal fluid became detectable after gene therapy and were associated with local clearance of GAGs. Patients showed stable cognitive performance, stable motor skills corresponding to continued motor development, improved or stable findings on magnetic resonance imaging of the brain and spine, reduced

Published
2021

2. Hematopoietic Stem- and Progenitor-Cell Gene Therapy for Hurler Syndrome

Author

Bernhard, Gentner, Francesca, Tucci, Stefania, Galimberti, Francesca, Fumagalli, Maurizio, De Pellegrin, Paolo, Silvani, Chiara, Camesasca, Silvia, Pontesilli, Silvia, Darin, Francesca, Ciotti, Marina, Sarzana, Giulia, Consiglieri, Chiara, Filisetti, Giulia, Forni, Laura, Passerini, Daniela, Tomasoni, Daniela, Cesana, Andrea, Calabria, Giulio, Spinozzi, Maria-Pia, Cicalese, Valeria, Calbi, Maddalena, Migliavacca, Federica, Barzaghi, Francesca, Ferrua, Vera, Gallo, Simona, Miglietta, Erika, Zonari, Patali S, Cheruku, Claudia, Forni, Marcella, Facchini, Ambra, Corti, Michela, Gabaldo, Stefano, Zancan, Serena, Gasperini, Attilio, Rovelli, Jaap-Jan, Boelens, Simon A, Jones, Robert, Wynn, Cristina, Baldoli, Eugenio, Montini, Silvia, Gregori, Fabio, Ciceri, Maria G, Valsecchi, Giancarlo, la Marca, Rossella, Parini, Luigi, Naldini, Alessandro, Aiuti, Maria-Ester, Bernardo, Ilaria, Visagalli, Gentner, B, Tucci, F, Galimberti, S, Fumagalli, F, De Pellegrin, M, Silvani, P, Camesasca, C, Pontesilli, S, Darin, S, Ciotti, F, Sarzana, M, Consiglieri, G, Filisetti, C, Forni, G, Passerini, L, Tomasoni, D, Cesana, D, Calabria, A, Spinozzi, G, Cicalese, M, Calbi, V, Migliavacca, M, Barzaghi, F, Ferrua, F, Gallo, V, Miglietta, S, Zonari, E, Cheruku, P, Forni, C, Facchini, M, Corti, A, Gabaldo, M, Zancan, S, Gasperini, S, Rovelli, A, Boelens, J, Jones, S, Wynn, R, Baldoli, C, Montini, E, Gregori, S, Ciceri, F, Valsecchi, M, la Marca, G, Parini, R, Naldini, L, Aiuti, A, Bernardo, M, Gentner, B., Tucci, F., Galimberti, S., Fumagalli, F., De Pellegrin, M., Silvani, P., Camesasca, C., Pontesilli, S., Darin, S., Ciotti, F., Sarzana, M., Consiglieri, G., Filisetti, C., Forni, G., Passerini, L., Tomasoni, D., Cesana, D., Calabria, A., Spinozzi, G., Cicalese, M. -P., Calbi, V., Migliavacca, M., Barzaghi, F., Ferrua, F., Gallo, V., Miglietta, S., Zonari, E., Cheruku, P. S., Forni, C., Facchini, M., Corti, A., Gabaldo, M., Zancan, S., Gasperini, S., Rovelli, A., Boelens, J. -J., Jones, S. A., Wynn, R., Baldoli, C., Montini, E., Gregori, S., Ciceri, F., Valsecchi, M. G., La Marca, G., Parini, R., Naldini, L., Aiuti, A., and Bernardo, M. -E.

Subjects
Male, Oncology, medicine.medical_specialty, Mucopolysaccharidosis I, Urinary system, Genetic enhancement, Genetic Vectors, Transplantation, Autologous, Iduronidase, Mucopolysaccharidosis type I, Internal medicine, MPSIH, medicine, Humans, Progenitor cell, Hurler syndrome, Glycosaminoglycans, business.industry, Lentivirus, mucopolysaccharidosis type I, Hematopoietic Stem Cell Transplantation, Infant, Genetic Therapy, General Medicine, medicine.disease, gene therapy, Transplantation, Haematopoiesis, Child, Preschool, Mutation, Female, business, Ex vivo, Follow-Up Studies, Stem Cell Transplantation
Abstract

Background Allogeneic hematopoietic stem-cell transplantation is the standard of care for Hurler syndrome (mucopolysaccharidosis type I, Hurler variant [MPSIH]). However, this treatment is only partially curative and is associated with complications. Methods We are conducting an ongoing study involving eight children with MPSIH. At enrollment, the children lacked a suitable allogeneic donor and had a Developmental Quotient or Intelligence Quotient score above 70 (i.e., none had moderate or severe cognitive impairment). The children received autologous hematopoietic stem and progenitor cells (HSPCs) transduced ex vivo with an alpha-L-iduronidase (IDUA)-encoding lentiviral vector after myeloablative conditioning. Safety and correction of blood IDUA activity up to supraphysiologic levels were the primary end points. Clearance of lysosomal storage material as well as skeletal and neurophysiological development were assessed as secondary and exploratory end points. The planned duration of the study is 5 years. Results We now report interim results. The children's mean (+/- SD) age at the time of HSPC gene therapy was 1.9 +/- 0.5 years. At a median follow-up of 2.10 years, the procedure had a safety profile similar to that known for autologous hematopoietic stem-cell transplantation. All the patients showed prompt and sustained engraftment of gene-corrected cells and had supraphysiologic blood IDUA activity within a month, which was maintained up to the latest follow-up. Urinary glycosaminoglycan (GAG) excretion decreased steeply, reaching normal levels at 12 months in four of five patients who could be evaluated. Previously undetectable levels of IDUA activity in the cerebrospinal fluid became detectable after gene therapy and were associated with local clearance of GAGs. Patients showed stable cognitive performance, stable motor skills corresponding to continued motor development, improved or stable findings on magnetic resonance imaging of the brain and spine, reduced joint stiffness, and normal growth in line with World Health Organization growth charts. Conclusions The delivery of HSPC gene therapy in patients with MPSIH resulted in extensive metabolic correction in peripheral tissues and the central nervous system. (Funded by Fondazione Telethon and others; ClinicalTrials.gov number, ; EudraCT number, .)Hematopoietic Gene Therapy for Hurler Syndrome Eight patients with Hurler syndrome who lacked suitable allogeneic donors received autologous hematopoietic stem and progenitor cells transduced ex vivo with an alpha-L-iduronidase-encoding lentiviral vector. This therapy resulted in extensive metabolic correction in peripheral tissues and the central nervous system.

Published
2021
Full Text
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3. Hematopoietic Stem- and Progenitor-Cell Gene Therapy for Hurler Syndrome.

Author

Gentner B, Tucci F, Galimberti S, Fumagalli F, De Pellegrin M, Silvani P, Camesasca C, Pontesilli S, Darin S, Ciotti F, Sarzana M, Consiglieri G, Filisetti C, Forni G, Passerini L, Tomasoni D, Cesana D, Calabria A, Spinozzi G, Cicalese MP, Calbi V, Migliavacca M, Barzaghi F, Ferrua F, Gallo V, Miglietta S, Zonari E, Cheruku PS, Forni C, Facchini M, Corti A, Gabaldo M, Zancan S, Gasperini S, Rovelli A, Boelens JJ, Jones SA, Wynn R, Baldoli C, Montini E, Gregori S, Ciceri F, Valsecchi MG, la Marca G, Parini R, Naldini L, Aiuti A, and Bernardo ME

Subjects
Child, Preschool, Female, Follow-Up Studies, Genetic Vectors, Glycosaminoglycans urine, Humans, Iduronidase deficiency, Iduronidase genetics, Infant, Lentivirus, Male, Mucopolysaccharidosis I metabolism, Mutation, Stem Cell Transplantation, Transplantation, Autologous, Genetic Therapy, Hematopoietic Stem Cell Transplantation, Iduronidase metabolism, Mucopolysaccharidosis I therapy
Abstract

Background: Allogeneic hematopoietic stem-cell transplantation is the standard of care for Hurler syndrome (mucopolysaccharidosis type I, Hurler variant [MPSIH]). However, this treatment is only partially curative and is associated with complications., Methods: We are conducting an ongoing study involving eight children with MPSIH. At enrollment, the children lacked a suitable allogeneic donor and had a Developmental Quotient or Intelligence Quotient score above 70 (i.e., none had moderate or severe cognitive impairment). The children received autologous hematopoietic stem and progenitor cells (HSPCs) transduced ex vivo with an α-L-iduronidase (IDUA)-encoding lentiviral vector after myeloablative conditioning. Safety and correction of blood IDUA activity up to supraphysiologic levels were the primary end points. Clearance of lysosomal storage material as well as skeletal and neurophysiological development were assessed as secondary and exploratory end points. The planned duration of the study is 5 years., Results: We now report interim results. The children's mean (±SD) age at the time of HSPC gene therapy was 1.9±0.5 years. At a median follow-up of 2.10 years, the procedure had a safety profile similar to that known for autologous hematopoietic stem-cell transplantation. All the patients showed prompt and sustained engraftment of gene-corrected cells and had supraphysiologic blood IDUA activity within a month, which was maintained up to the latest follow-up. Urinary glycosaminoglycan (GAG) excretion decreased steeply, reaching normal levels at 12 months in four of five patients who could be evaluated. Previously undetectable levels of IDUA activity in the cerebrospinal fluid became detectable after gene therapy and were associated with local clearance of GAGs. Patients showed stable cognitive performance, stable motor skills corresponding to continued motor development, improved or stable findings on magnetic resonance imaging of the brain and spine, reduced joint stiffness, and normal growth in line with World Health Organization growth charts., Conclusions: The delivery of HSPC gene therapy in patients with MPSIH resulted in extensive metabolic correction in peripheral tissues and the central nervous system. (Funded by Fondazione Telethon and others; ClinicalTrials.gov number, NCT03488394; EudraCT number, 2017-002430-23.)., (Copyright © 2021 Massachusetts Medical Society.)

Published
2021
Full Text
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