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Cobalamin Deficiency - Diagnosis and Therapy

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT04243707
Recruitment Status : Completed
First Posted : January 28, 2020
Last Update Posted : February 12, 2020
Information provided by (Responsible Party):
University Hospital, Basel, Switzerland

Brief Summary:

In a retrospective study with existing values of vitamin B12 and holotranscobalamin 4 strategies are simulated and the results and costs are compared.

Generally, cobalamin ist substituted by intramuscular administration. However, oral preparations are also available. Aims of the focus groups are to investigate the awareness of a (potential) deficiency and to identify a therapy for best adherence.

Condition or disease
Vitamin B 12 Deficiency

Detailed Description:

Various diagnostic strategies exist for the identification of a cobalamin deficiency. In a retrospective study with existing serum values of vitamin B12 and holotranscobalamin 4 strategies are simulated and the results and costs are compared.

A cobalamin deficiency can have various causes: Dietary habits (vegetarian, vegan), advanced age, pernicious anaemia, gastrectomy, drug interactions (metformin, proton pump blocker). Therapy is often performed by intramuscular administration of cobalamin. However, oral preparations are also available in very different dosages. Investigators want to investigate with focus groups whether different patient groups are aware of a (potential) deficiency, how cobalamin is actually substituted (with registered or otherwise acquired products) and which therapy would lead to best adherence.

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Study Type : Observational
Actual Enrollment : 3000 participants
Observational Model: Cohort
Time Perspective: Retrospective
Official Title: Diagnostics and Therapy of a Cobalamin Deficiency
Actual Study Start Date : January 1, 2017
Actual Primary Completion Date : December 31, 2018
Actual Study Completion Date : November 30, 2019

Resource links provided by the National Library of Medicine

MedlinePlus related topics: B Vitamins
Drug Information available for: Cobalamin

Primary Outcome Measures :
  1. diagnostic strategies [ Time Frame: 2017 - 2018 ]
    Sensitivity and specificity of 4 different diagnostic strategies compared to the simultaneous determination of vitamin B12 and holotranscobalamin.

  2. supplementation of cobalamin deficiency [ Time Frame: 2020 ]
    Patient's awareness of a potential cobalamin deficiency, treatment actually applied - with or without registration, ideal supplementation to achieve best adherence.

Information from the National Library of Medicine

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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Probability Sample
Study Population
potential cobalamin deficiency

Inclusion Criteria:

  • potential cobalamin deficiency

Exclusion Criteria:

  • refusal to take part in a survey

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT04243707

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Pharmaceutical Care Research Group
Basel, Switzerland, 4056
Sponsors and Collaborators
University Hospital, Basel, Switzerland
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Principal Investigator: Isabelle Arnet, PD Dr. Pharmaceutical Care Research Group
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Responsible Party: University Hospital, Basel, Switzerland Identifier: NCT04243707    
Other Study ID Numbers: 2019-01295
First Posted: January 28, 2020    Key Record Dates
Last Update Posted: February 12, 2020
Last Verified: February 2020
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Additional relevant MeSH terms:
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Vitamin B 12 Deficiency
Vitamin B Deficiency
Deficiency Diseases
Nutrition Disorders