Automated Reading of Anti-neutrophil Cytoplasmic Autoantibodies, Indispensable Markers of Vasculitis (ANCA)

Automated Reading of Anti-neutrophil Cytoplasmic Autoantibodies (ANCA), Indispensable Markers of Vasculitis

Neutrophil cytoplasmic autoantibodies (ANCA) are essential serum markers in the diagnosis of vasculitis. Indirect immunofluorescence with microscope reading by two readers is the reference technique for their detection. In the AP-HM immunology laboratory we are looking for ANCAs in more than 7000 sera per year. The reading of the slides is time-consuming, dependent operator, and lacks standardization. In order to optimize these parameters, we propose the automation of ANCA reading by using a robotic platform developed in our laboratory and called ICARE (Immunofluorescence for Computed Antibodies Rational Evaluation). This microscopic imaging platform with automated reading is currently used in daily routine for the detection of anti-nuclear autoantibodies.

The objective of the project is to establish an algorithm allowing i) to automatically and reproducibly discriminate the positive ANCAs from the negative ANCAs and ii) to propose to the biologist a fluorescence aspect. The investigators will then validate this algorithm on 2000 consecutive routine samples sent to the laboratory for ANCA research.

The usual care will not be changed, only a phase of acquisition of the images will be added to the analysis.

The investigators expect to use this algorithm "ICARE / ANCA" in daily hospital routine and thus optimize the results with a real economic impact is 50% less reading time.

Study Overview

• Status: Unknown
• Conditions: Vascular Diseases
• Intervention / Treatment: Other: acquisition imaging

Detailed Description

Neutrophil cytoplasmic autoantibodies (ANCA) are essential serum markers in the diagnosis of vasculitis. Indirect immunofluorescence with microscope reading by two readers is the reference technique for their detection. In the AP-HM immunology laboratory we are looking for ANCAs in more than 7000 sera per year. The reading of the slides is time-consuming, dependent operator, and lacks standardization. In order to optimize these parameters, we propose the automation of ANCA reading by using a robotic platform developed in our laboratory and called ICARE (Immunofluorescence for Computed Antibodies Rational Evaluation). This microscopic imaging platform with automated reading is currently used in daily routine for the detection of anti-nuclear autoantibodies.

The objective of the project is to establish an algorithm allowing i) to automatically and reproducibly discriminate the positive ANCAs from the negative ANCAs and ii) to propose to the biologist a fluorescence aspect. The investigators will then validate this algorithm on 2000 consecutive routine samples sent to the laboratory for ANCA research.

The usual care will not be changed, only a phase of acquisition of the images will be added to the analysis.

The investigators expect to use this algorithm "ICARE / ANCA" in daily hospital routine and thus optimize the results with a real economic impact is 50% less reading time. . From a valorisation point of view, this project could be the subject of a publication in an international scientific journal, a patent filing and an exploitation with an industrial partner.

• Study Type: Interventional
• Enrollment (Anticipated): 2000
• Phase: Not Applicable

Contacts and Locations

Study Locations

• France
  • Paca
    • Marseille, Paca, France, 13354
      • Assistance Publique Des Hopitaix de Marseille

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Vasculitis patients having signed a consent

Exclusion Criteria:

• patients refusing to sign a consent

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Other
• Allocation: N/A
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

1

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Experimental: experimental group; Vasculitis patients The usual care of the sera will not be modified, only a phase of acquisition of the images will be added to the analysis of serum. (acquisition imaging)	Other: acquisition imaging; The usual care of the sera will not be modified, only a phase of acquisition of the images will be added to the analysis

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
The number of positive ANCAs	The number of positive ANCAs detected in order to automatically and reliably discriminate against positive ANCAs from negative ANCAs	1 day

Collaborators and Investigators

• Sponsor: Assistance Publique Hopitaux De Marseille

Study record dates

Study Major Dates

• Study Start (Anticipated): October 1, 2018
• Primary Completion (Anticipated): October 1, 2020
• Study Completion (Anticipated): April 1, 2021

Study Registration Dates

• First Submitted: August 17, 2018
• First Submitted That Met QC Criteria: August 17, 2018
• First Posted (Actual): August 21, 2018

Study Record Updates

• Last Update Posted (Actual): August 21, 2018
• Last Update Submitted That Met QC Criteria: August 17, 2018
• Last Verified: August 1, 2018

More Information

Terms related to this study

• Additional Relevant MeSH Terms: Cardiovascular Diseases; Vascular Diseases; Vasculitis
• Other Study ID Numbers: 2018-25

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No