Evidence map›Paper›PMID 42057972›Full record

ArticleOxford medical case reports2026

Carbidopa/levodopa induced severe vitamin B6 deficiency leading to symptomatic transfusion dependent microcytic Anemia.

Byung K Lee, Jaime P Gastwirt

Abstract readCase Reports
In one paragraph

Article in Oxford medical case reports, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed.

  1. Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

2 authors.

Byung K LeeDepartment of Medicine, Naval Medical Center San Diego, 34800 Bob Wilson Drive, San Diego, CA 92134, United States of America.ORCID https://orcid.org/0009-0007-0995-5160
Jaime P GastwirtDepartment of Hematology & Oncology, Naval Medical Center San Diego, 34800 Bob Wilson Drive, San Diego, CA 92134, United States of America.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Parkinson's Disease is on the rise over the coming decades with expectations that more patients will be prescribed levodopa therapy. This case presents a patient with Parkinson's Disease who presented with severe symptomatic microcytic anemia. He was transfusion dependent during his extensive work up that occurred during both inpatient hospitalization and outpatient hematology visits. This was negative for iron deficiency, infectious etiology, hemolysis, active bleeding, bone marrow failure, myelodysplasia or hematologic malignancy. However, patient was found to have a critically low vitamin B6 level. Following initiation of vitamin B6 supplementation, patient's anemia resolved and was no longer transfusion dependent.

Indexed as

carbidopa/levodopamicrocytic AnemiaParkinson’s diseasevitamin B6 deficiency

Identifiers

PMID42057972
PMCPMC13122617

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.