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Your search keyword '"Mooijer, Petra M."' showing total 2 results
Start Over Author "Mooijer, Petra M." Topic aldehyde oxidoreductases
2 results on '"Mooijer, Petra M."'

1. An autosomal dominant neurological disorder caused by de novo variants in FAR1 resulting in uncontrolled synthesis of ether lipids.

Author

Ferdinandusse S, McWalter K, Te Brinke H, IJlst L, Mooijer PM, Ruiter JPN, van Lint AEM, Pras-Raves M, Wever E, Millan F, Guillen Sacoto MJ, Begtrup A, Tarnopolsky M, Brady L, Ladda RL, Sell SL, Nowak CB, Douglas J, Tian C, Ulm E, Perlman S, Drack AV, Chong K, Martin N, Brault J, Brokamp E, Toro C, Gahl WA, Macnamara EF, Wolfe L, Waisfisz Q, Zwijnenburg PJG, Ziegler A, Barth M, Smith R, Ellingwood S, Gaebler-Spira D, Bakhtiari S, Kruer MC, van Kampen AHC, Wanders RJA, Waterham HR, Cassiman D, and Vaz FM

Subjects
Humans, Phenotype, Aldehyde Oxidoreductases genetics, Ethers, Lipids, Spastic Paraplegia, Hereditary genetics
Abstract

Purpose: In this study we investigate the disease etiology in 12 patients with de novo variants in FAR1 all resulting in an amino acid change at position 480 (p.Arg480Cys/His/Leu)., Methods: Following next-generation sequencing and clinical phenotyping, functional characterization was performed in patients' fibroblasts using FAR1 enzyme analysis, FAR1 immunoblotting/immunofluorescence, and lipidomics., Results: All patients had spastic paraparesis and bilateral congenital/juvenile cataracts, in most combined with speech and gross motor developmental delay and truncal hypotonia. FAR1 deficiency caused by biallelic variants results in defective ether lipid synthesis and plasmalogen deficiency. In contrast, patients' fibroblasts with the de novo FAR1 variants showed elevated plasmalogen levels. Further functional studies in fibroblasts showed that these variants cause a disruption of the plasmalogen-dependent feedback regulation of FAR1 protein levels leading to uncontrolled ether lipid production., Conclusion: Heterozygous de novo variants affecting the Arg480 residue of FAR1 lead to an autosomal dominant disorder with a different disease mechanism than that of recessive FAR1 deficiency and a diametrically opposed biochemical phenotype. Our findings show that for patients with spastic paraparesis and bilateral cataracts, FAR1 should be considered as a candidate gene and added to gene panels for hereditary spastic paraplegia, cerebral palsy, and juvenile cataracts.

Published
2021
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2. An autosomal dominant neurological disorder caused by de novo variants in FAR1 resulting in uncontrolled synthesis of ether lipids

Author

Ferdinandusse, Sacha, McWalter, Kirsty, Te Brinke, Heleen, IJlst, Lodewijk, Mooijer, Petra M, Ruiter, Jos PN, van Lint, Alida EM, Pras-Raves, Mia, Wever, Eric, Millan, Francisca, Guillen Sacoto, Maria J, Begtrup, Amber, Tarnopolsky, Mark, Brady, Lauren, Ladda, Roger L, Sell, Susan L, Nowak, Catherine B, Douglas, Jessica, Tian, Cuixia, Ulm, Elizabeth, Perlman, Seth, Drack, Arlene V, Chong, Karen, Martin, Nicole, Brault, Jennifer, Brokamp, Elly, Toro, Camilo, Gahl, William A, Macnamara, Ellen F, Wolfe, Lynne, Undiagnosed Diseases Network, Waisfisz, Quinten, Zwijnenburg, Petra JG, Ziegler, Alban, Barth, Magalie, Smith, Rosemarie, Ellingwood, Sara, Gaebler-Spira, Deborah, Bakhtiari, Somayeh, Kruer, Michael C, van Kampen, Antoine HC, Wanders, Ronald JA, Waterham, Hans R, Cassiman, David, and Vaz, Frédéric M

Subjects
Pediatric, Genetics & Heredity, Clinical Sciences, Neurosciences, Undiagnosed Diseases Network, Aldehyde Oxidoreductases, Lipids, Hereditary, Phenotype, Clinical Research, Neurological, Genetics, Humans, Spastic Paraplegia, 2.1 Biological and endogenous factors, Aetiology, Ethers
Abstract

PurposeIn this study we investigate the disease etiology in 12 patients with de novo variants in FAR1 all resulting in an amino acid change at position 480 (p.Arg480Cys/His/Leu).MethodsFollowing next-generation sequencing and clinical phenotyping, functional characterization was performed in patients' fibroblasts using FAR1 enzyme analysis, FAR1 immunoblotting/immunofluorescence, and lipidomics.ResultsAll patients had spastic paraparesis and bilateral congenital/juvenile cataracts, in most combined with speech and gross motor developmental delay and truncal hypotonia. FAR1 deficiency caused by biallelic variants results in defective ether lipid synthesis and plasmalogen deficiency. In contrast, patients' fibroblasts with the de novo FAR1 variants showed elevated plasmalogen levels. Further functional studies in fibroblasts showed that these variants cause a disruption of the plasmalogen-dependent feedback regulation of FAR1 protein levels leading to uncontrolled ether lipid production.ConclusionHeterozygous de novo variants affecting the Arg480 residue of FAR1 lead to an autosomal dominant disorder with a different disease mechanism than that of recessive FAR1 deficiency and a diametrically opposed biochemical phenotype. Our findings show that for patients with spastic paraparesis and bilateral cataracts, FAR1 should be considered as a candidate gene and added to gene panels for hereditary spastic paraplegia, cerebral palsy, and juvenile cataracts.

Published
2021

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