A phase 1 study to evaluate the safety and pharmacokinetics of PQ912, a glutaminyl cyclase inhibitor, in healthy subjects

Abstract Introduction Pyroglutamate-amyloid-β (pE-Aβ) peptides are major components of Aβ-oligomers and Aβ-plaques, which are regarded as key culprits of Alzheimer's disease (AD) pathology. PQ912 is a competitive inhibitor of the enzyme glutaminyl cyclase (QC), essential for the formation of pE...

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Published inAlzheimer's & dementia : translational research & clinical interventions Vol. 1; no. 3; pp. 182 - 195
Main Authors Lues, Inge, Weber, Frank, Meyer, Antje, Bühring, Uli, Hoffmann, Torsten, Kühn-Wache, Kerstin, Manhart, Susanne, Heiser, Ulrich, Pokorny, Rolf, Chiesa, Joseph, Glund, Konrad
Format Journal Article
LanguageEnglish
Published United States Elsevier Inc 01.11.2015
Elsevier
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ISSN2352-8737
2352-8737
DOI10.1016/j.trci.2015.08.002

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Abstract Abstract Introduction Pyroglutamate-amyloid-β (pE-Aβ) peptides are major components of Aβ-oligomers and Aβ-plaques, which are regarded as key culprits of Alzheimer's disease (AD) pathology. PQ912 is a competitive inhibitor of the enzyme glutaminyl cyclase (QC), essential for the formation of pE-Aβ peptides. Methods A randomized, double-blind, placebo-controlled, single- and multiple-ascending oral dose study investigated the safety, pharmacokinetics, and pharmacodynamics of PQ912 in healthy nonelderly and elderly subjects. Results PQ912 was considered safe and well tolerated with dose-proportional pharmacokinetics up to doses of 200 mg. At higher doses up to 1800 mg, exposure was supraproportional and exposure in elderly subjects was approximately 1.5- to 2.1-fold higher. Exposure in cerebrospinal fluid (CSF) was approximately 20% of the unbound drug in plasma, and both serum and CSF QC activity was inhibited in a dose-related manner. Discussion This first-in-man study of a compound-targeting QC inhibition justifies further development of PQ912 for the treatment of AD.
AbstractList Abstract Introduction Pyroglutamate-amyloid-β (pE-Aβ) peptides are major components of Aβ-oligomers and Aβ-plaques, which are regarded as key culprits of Alzheimer's disease (AD) pathology. PQ912 is a competitive inhibitor of the enzyme glutaminyl cyclase (QC), essential for the formation of pE-Aβ peptides. Methods A randomized, double-blind, placebo-controlled, single- and multiple-ascending oral dose study investigated the safety, pharmacokinetics, and pharmacodynamics of PQ912 in healthy nonelderly and elderly subjects. Results PQ912 was considered safe and well tolerated with dose-proportional pharmacokinetics up to doses of 200 mg. At higher doses up to 1800 mg, exposure was supraproportional and exposure in elderly subjects was approximately 1.5- to 2.1-fold higher. Exposure in cerebrospinal fluid (CSF) was approximately 20% of the unbound drug in plasma, and both serum and CSF QC activity was inhibited in a dose-related manner. Discussion This first-in-man study of a compound-targeting QC inhibition justifies further development of PQ912 for the treatment of AD.
Pyroglutamate-amyloid-β (pE-Aβ) peptides are major components of Aβ-oligomers and Aβ-plaques, which are regarded as key culprits of Alzheimer's disease (AD) pathology. PQ912 is a competitive inhibitor of the enzyme glutaminyl cyclase (QC), essential for the formation of pE-Aβ peptides. A randomized, double-blind, placebo-controlled, single- and multiple-ascending oral dose study investigated the safety, pharmacokinetics, and pharmacodynamics of PQ912 in healthy nonelderly and elderly subjects. PQ912 was considered safe and well tolerated with dose-proportional pharmacokinetics up to doses of 200 mg. At higher doses up to 1800 mg, exposure was supraproportional and exposure in elderly subjects was approximately 1.5- to 2.1-fold higher. Exposure in cerebrospinal fluid (CSF) was approximately 20% of the unbound drug in plasma, and both serum and CSF QC activity was inhibited in a dose-related manner. This first-in-man study of a compound-targeting QC inhibition justifies further development of PQ912 for the treatment of AD.
Introduction Pyroglutamate‐amyloid‐β (pE‐Aβ) peptides are major components of Aβ‐oligomers and Aβ‐plaques, which are regarded as key culprits of Alzheimer's disease (AD) pathology. PQ912 is a competitive inhibitor of the enzyme glutaminyl cyclase (QC), essential for the formation of pE‐Aβ peptides. Methods A randomized, double‐blind, placebo‐controlled, single‐ and multiple‐ascending oral dose study investigated the safety, pharmacokinetics, and pharmacodynamics of PQ912 in healthy nonelderly and elderly subjects. Results PQ912 was considered safe and well tolerated with dose‐proportional pharmacokinetics up to doses of 200 mg. At higher doses up to 1800 mg, exposure was supraproportional and exposure in elderly subjects was approximately 1.5‐ to 2.1‐fold higher. Exposure in cerebrospinal fluid (CSF) was approximately 20% of the unbound drug in plasma, and both serum and CSF QC activity was inhibited in a dose‐related manner. Discussion This first‐in‐man study of a compound‐targeting QC inhibition justifies further development of PQ912 for the treatment of AD.
Pyroglutamate-amyloid-β (pE-Aβ) peptides are major components of Aβ-oligomers and Aβ-plaques, which are regarded as key culprits of Alzheimer's disease (AD) pathology. PQ912 is a competitive inhibitor of the enzyme glutaminyl cyclase (QC), essential for the formation of pE-Aβ peptides.INTRODUCTIONPyroglutamate-amyloid-β (pE-Aβ) peptides are major components of Aβ-oligomers and Aβ-plaques, which are regarded as key culprits of Alzheimer's disease (AD) pathology. PQ912 is a competitive inhibitor of the enzyme glutaminyl cyclase (QC), essential for the formation of pE-Aβ peptides.A randomized, double-blind, placebo-controlled, single- and multiple-ascending oral dose study investigated the safety, pharmacokinetics, and pharmacodynamics of PQ912 in healthy nonelderly and elderly subjects.METHODSA randomized, double-blind, placebo-controlled, single- and multiple-ascending oral dose study investigated the safety, pharmacokinetics, and pharmacodynamics of PQ912 in healthy nonelderly and elderly subjects.PQ912 was considered safe and well tolerated with dose-proportional pharmacokinetics up to doses of 200 mg. At higher doses up to 1800 mg, exposure was supraproportional and exposure in elderly subjects was approximately 1.5- to 2.1-fold higher. Exposure in cerebrospinal fluid (CSF) was approximately 20% of the unbound drug in plasma, and both serum and CSF QC activity was inhibited in a dose-related manner.RESULTSPQ912 was considered safe and well tolerated with dose-proportional pharmacokinetics up to doses of 200 mg. At higher doses up to 1800 mg, exposure was supraproportional and exposure in elderly subjects was approximately 1.5- to 2.1-fold higher. Exposure in cerebrospinal fluid (CSF) was approximately 20% of the unbound drug in plasma, and both serum and CSF QC activity was inhibited in a dose-related manner.This first-in-man study of a compound-targeting QC inhibition justifies further development of PQ912 for the treatment of AD.DISCUSSIONThis first-in-man study of a compound-targeting QC inhibition justifies further development of PQ912 for the treatment of AD.
Author Bühring, Uli
Weber, Frank
Hoffmann, Torsten
Pokorny, Rolf
Heiser, Ulrich
Kühn-Wache, Kerstin
Meyer, Antje
Glund, Konrad
Lues, Inge
Manhart, Susanne
Chiesa, Joseph
AuthorAffiliation b Covance Clinical Research Unit AG, Allschwil (Basel), Switzerland
c Covance Clinical Research Unit Ltd, Leeds, UK
a Probiodrug AG, Halle (Saale), Germany
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  fullname: Glund, Konrad
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2015 The Authors. Published by Elsevier Inc. on behalf of the Alzheimer's Association.
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Issue 3
Keywords QC inhibitor
Glutaminyl cyclase
pE-Aβ
Pyroglutamate
Cerebrospinal fluid
Alzheimer's disease
Amyloid-beta
Language English
License http://creativecommons.org/licenses/by-nc-nd/4.0
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Present address: Covance Ltd, Osprey House, Westacott Way, Maidenhead, SL6 3QH, UK.
Present address: Serumwerk Bernburg AG, D-06406 Bernburg, Germany.
Present address: St. Annaweg 28, CH-4112 Flüh, Switzerland.
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Snippet Abstract Introduction Pyroglutamate-amyloid-β (pE-Aβ) peptides are major components of Aβ-oligomers and Aβ-plaques, which are regarded as key culprits of...
Pyroglutamate-amyloid-β (pE-Aβ) peptides are major components of Aβ-oligomers and Aβ-plaques, which are regarded as key culprits of Alzheimer's disease (AD)...
Introduction Pyroglutamate‐amyloid‐β (pE‐Aβ) peptides are major components of Aβ‐oligomers and Aβ‐plaques, which are regarded as key culprits of Alzheimer's...
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SubjectTerms Alzheimer's disease
Amyloid-beta
Cerebrospinal fluid
Glutaminyl cyclase
Neurology
Other
pE-Aβ
Pyroglutamate
QC inhibitor
Title A phase 1 study to evaluate the safety and pharmacokinetics of PQ912, a glutaminyl cyclase inhibitor, in healthy subjects
URI https://www.clinicalkey.es/playcontent/1-s2.0-S2352873715000220
https://dx.doi.org/10.1016/j.trci.2015.08.002
https://onlinelibrary.wiley.com/doi/abs/10.1016%2Fj.trci.2015.08.002
https://www.ncbi.nlm.nih.gov/pubmed/29854937
https://www.proquest.com/docview/2049551489
https://pubmed.ncbi.nlm.nih.gov/PMC5975062
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