C1q deficiency in an Inuit family: Identification of a new class of C1q disease-causing mutations
C1q deficiency is a rare condition associated with a systemic lupus erythematosus (SLE)-like syndrome and recurrent infections. Here we present the molecular basis behind C1q deficiency in three sisters of Inuit origin. Initial examination for complement deficiency showed no function of the classica...
Published in: | Clinical Immunology |
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Language: | English |
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Online Access: | https://lup.lub.lu.se/record/645857 https://doi.org/10.1016/j.clim.2007.03.547 |
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ftulundlup:oai:lup.lub.lu.se:9f2fcdf5-eccd-400d-ad42-5a45239579ff 2023-05-15T16:54:57+02:00 C1q deficiency in an Inuit family: Identification of a new class of C1q disease-causing mutations Marquart, Hanne Vibeke Schejbel, Lone Sjöholm, Anders Mårtensson, Ulla Nielsen, Susan Koch, Anders Svejgaard, Arne Garred, Peter 2007 https://lup.lub.lu.se/record/645857 https://doi.org/10.1016/j.clim.2007.03.547 eng eng Elsevier https://lup.lub.lu.se/record/645857 http://dx.doi.org/10.1016/j.clim.2007.03.547 wos:000247857300007 scopus:34250779543 Clinical Immunology; 124(1), pp 33-40 (2007) ISSN: 1521-6616 Immunology in the medical area autoimmunity primary immunodeficiency mutation classical pathway infections SLE C1q deficiency complement contributiontojournal/article info:eu-repo/semantics/article text 2007 ftulundlup https://doi.org/10.1016/j.clim.2007.03.547 2023-02-01T23:28:26Z C1q deficiency is a rare condition associated with a systemic lupus erythematosus (SLE)-like syndrome and recurrent infections. Here we present the molecular basis behind C1q deficiency in three sisters of Inuit origin. Initial examination for complement deficiency showed no function of the classical complement activation pathway in the patients; the lectin and alternative pathways were intact. No C1q or tow molecular weight Clq was detected in sera and no anti-C1q autoantibodies were found. Sequencing of the C1q genes revealed a novel missense mutation (Gly-Arg) in codon 217 of the B chain. All sisters were homozygous for the mutation: both parents were heterozygous. None of 100 healthy controls carried the mutation. Our findings define a third class of molecular mechanisms behind C1q deficiency, where missense mutations cause a lack of detectable C1q-antigen in serum. (c) 2007 Elsevier Inc. ALL rights reserved. Article in Journal/Newspaper inuit Lund University Publications (LUP) Three Sisters ENVELOPE(-68.470,-68.470,-71.441,-71.441) Clinical Immunology 124 1 33 40 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Immunology in the medical area autoimmunity primary immunodeficiency mutation classical pathway infections SLE C1q deficiency complement |
spellingShingle |
Immunology in the medical area autoimmunity primary immunodeficiency mutation classical pathway infections SLE C1q deficiency complement Marquart, Hanne Vibeke Schejbel, Lone Sjöholm, Anders Mårtensson, Ulla Nielsen, Susan Koch, Anders Svejgaard, Arne Garred, Peter C1q deficiency in an Inuit family: Identification of a new class of C1q disease-causing mutations |
topic_facet |
Immunology in the medical area autoimmunity primary immunodeficiency mutation classical pathway infections SLE C1q deficiency complement |
description |
C1q deficiency is a rare condition associated with a systemic lupus erythematosus (SLE)-like syndrome and recurrent infections. Here we present the molecular basis behind C1q deficiency in three sisters of Inuit origin. Initial examination for complement deficiency showed no function of the classical complement activation pathway in the patients; the lectin and alternative pathways were intact. No C1q or tow molecular weight Clq was detected in sera and no anti-C1q autoantibodies were found. Sequencing of the C1q genes revealed a novel missense mutation (Gly-Arg) in codon 217 of the B chain. All sisters were homozygous for the mutation: both parents were heterozygous. None of 100 healthy controls carried the mutation. Our findings define a third class of molecular mechanisms behind C1q deficiency, where missense mutations cause a lack of detectable C1q-antigen in serum. (c) 2007 Elsevier Inc. ALL rights reserved. |
format |
Article in Journal/Newspaper |
author |
Marquart, Hanne Vibeke Schejbel, Lone Sjöholm, Anders Mårtensson, Ulla Nielsen, Susan Koch, Anders Svejgaard, Arne Garred, Peter |
author_facet |
Marquart, Hanne Vibeke Schejbel, Lone Sjöholm, Anders Mårtensson, Ulla Nielsen, Susan Koch, Anders Svejgaard, Arne Garred, Peter |
author_sort |
Marquart, Hanne Vibeke |
title |
C1q deficiency in an Inuit family: Identification of a new class of C1q disease-causing mutations |
title_short |
C1q deficiency in an Inuit family: Identification of a new class of C1q disease-causing mutations |
title_full |
C1q deficiency in an Inuit family: Identification of a new class of C1q disease-causing mutations |
title_fullStr |
C1q deficiency in an Inuit family: Identification of a new class of C1q disease-causing mutations |
title_full_unstemmed |
C1q deficiency in an Inuit family: Identification of a new class of C1q disease-causing mutations |
title_sort |
c1q deficiency in an inuit family: identification of a new class of c1q disease-causing mutations |
publisher |
Elsevier |
publishDate |
2007 |
url |
https://lup.lub.lu.se/record/645857 https://doi.org/10.1016/j.clim.2007.03.547 |
long_lat |
ENVELOPE(-68.470,-68.470,-71.441,-71.441) |
geographic |
Three Sisters |
geographic_facet |
Three Sisters |
genre |
inuit |
genre_facet |
inuit |
op_source |
Clinical Immunology; 124(1), pp 33-40 (2007) ISSN: 1521-6616 |
op_relation |
https://lup.lub.lu.se/record/645857 http://dx.doi.org/10.1016/j.clim.2007.03.547 wos:000247857300007 scopus:34250779543 |
op_doi |
https://doi.org/10.1016/j.clim.2007.03.547 |
container_title |
Clinical Immunology |
container_volume |
124 |
container_issue |
1 |
container_start_page |
33 |
op_container_end_page |
40 |
_version_ |
1766045897729245184 |