Patents by Inventor Hendrik Jan Guchelaar

Hendrik Jan Guchelaar has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20130196313
    Abstract: Pharmacogenetic methods for determining a predicting responsiveness to antifolate therapy for subjects that present with recent-onset undifferentiated arthritis. The methods are based on the determination of a set of clinical parameter values and determining a predicted responsiveness to antifolate therapy by correlating the parameter values with predefined responsiveness values associated with ranges of parameter values. Parameters values that are decisive for responsiveness to antifolate therapy may include polymorphisms in the methylenetetrahydrofolate dehydrogenase (MTHFD1) gene as well as in three genes involved in the adenosine release pathway, the presence or absence of Rheumatoid factors, gender, pre- or postmenopausal status and/or smoking status.
    Type: Application
    Filed: October 27, 2011
    Publication date: August 1, 2013
    Applicant: ACADEMISCH ZIEKENHUIS H.O.D.N. LUMC
    Inventors: Hendrik Jan Guchelaar, Tom Willen Johannes Huizinga
  • Patent number: 8073630
    Abstract: Pharmacogenetic methods for determining a predicting responsiveness to antifolate therapy for subjects that present with recent-onset undifferentiated arthritis. The methods are based on the determination of a set of clinical parameter values and determining a predicted responsiveness to antifolate therapy by correlating the parameter values with predefined responsiveness values associated with ranges of parameter values. Parameters values that are decisive for responsiveness to antifolate therapy may include polymorphisms in the methylenetetrahydrofolate dehydrogenase (MTHFD1) gene as well as in three genes involved in the adenosine release pathway, the presence or absence of Rheumatoid factors, gender, pre- or postmenopausal status and/or smoking status.
    Type: Grant
    Filed: August 28, 2007
    Date of Patent: December 6, 2011
    Assignee: Exagen Diagnostics, Inc.
    Inventors: Hendrik Jan Guchelaar, Tom Willem Johannes Huizinga
  • Patent number: 8029998
    Abstract: Methods and kits for predicting the efficacy of antifolate (e.g., methotrexate) treatment of rheumatoid arthritis by detecting polymorphisms, particularly single nucleotide polymorphisms, in adenosine pathway genes.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: October 4, 2011
    Assignee: Academisch Ziekenhuis Leiden H.O.D.N. LUMC
    Inventors: Hendrik Jan Guchelaar, Tom Willem Johannes Huizinga
  • Publication number: 20100240541
    Abstract: Methods and kits for predicting the efficacy of antifolate (e.g., methotrexate) treatment of rheumatoid arthritis by detecting polymorphisms, particularly single nucleotide polymorphisms, in adenosine pathway genes.
    Type: Application
    Filed: March 29, 2010
    Publication date: September 23, 2010
    Applicant: ACADEMISCH ZEIKENHUIS LEIDEN H.O.D.N. LUMC
    Inventors: Hendrik Jan Guchelaar, Tom Willem Johannes Huizinga
  • Patent number: 7713696
    Abstract: Methods and kits for predicting the efficacy of antifolate (e.g., methotrexate) treatment of rheumatoid arthritis by detecting polymorphisms, particularly single nucleotide polymorphisms, in adenosine pathway genes.
    Type: Grant
    Filed: April 10, 2006
    Date of Patent: May 11, 2010
    Assignee: Academisch Zeikenhuis Leiden H.O.D.N. Lumc
    Inventors: Hendrik Jan Guchelaar, Tom Willem Johannes Huizinga
  • Publication number: 20090029379
    Abstract: Methods and kits for predicting the efficacy of antifolate (e.g., methotrexate) treatment of rheumatoid arthritis by detecting polymorphisms, particularly single nucleotide polymorphisms, in adenosine pathway genes.
    Type: Application
    Filed: July 31, 2008
    Publication date: January 29, 2009
    Inventors: Hendrik Jan Guchelaar, Tom Willem Johannes Huizinga
  • Publication number: 20080288177
    Abstract: Pharmacogenetic methods for determining a predicting responsiveness to antifolate therapy for subjects that present with recent-onset undifferentiated arthritis. The methods are based on the determination of a set of clinical parameter values and determining a predicted responsiveness to antifolate therapy by correlating the parameter values with predefined responsiveness values associated with ranges of parameter values. Parameters values that are decisive for responsiveness to antifolate therapy may include polymorphisms in the methylenetetrahydrofolate dehydrogenase (MTHFD1) gene as well as in three genes involved in the adenosine release pathway, the presence or absence of Rheumatoid factors, gender, pre- or postmenopausal status and/or smoking status.
    Type: Application
    Filed: August 28, 2007
    Publication date: November 20, 2008
    Inventors: Hendrik Jan Guchelaar, Tom Willen Johannes Huizinga
  • Publication number: 20070238103
    Abstract: Methods and kits for predicting the efficacy of antifolate (e.g., methotrexate) treatment of rheumatoid arthritis by detecting polymorphisms, particularly single nucleotide polymorphisms, in adenosine pathway genes.
    Type: Application
    Filed: April 10, 2006
    Publication date: October 11, 2007
    Inventors: Hendrik Jan Guchelaar, Thomas Willem Johannes Huizinga