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Case ReportCase Report
Open Access

Thrombocytopenia following iron repletion with ferrous gluconate

Aljoharah A. Al Saud, Muneerah R. AlRomaizan and Muath A. Alkhunizan
Saudi Medical Journal August 2024, 45 (8) 848-850; DOI: https://doi.org/10.15537/smj.2024.45.8.20231003
Aljoharah A. Al Saud
From the College of Medicine (Al Saud, AlRomaizan), Alfaisal University, and from the Department of Family Medicine and Polyclinic (Alkhunizan), King Faisal Specialist Hospital and Research Centre, Riyadh, Kingdom of Saudi Arabia
MBBS
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Muneerah R. AlRomaizan
From the College of Medicine (Al Saud, AlRomaizan), Alfaisal University, and from the Department of Family Medicine and Polyclinic (Alkhunizan), King Faisal Specialist Hospital and Research Centre, Riyadh, Kingdom of Saudi Arabia
MBBS
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Muath A. Alkhunizan
From the College of Medicine (Al Saud, AlRomaizan), Alfaisal University, and from the Department of Family Medicine and Polyclinic (Alkhunizan), King Faisal Specialist Hospital and Research Centre, Riyadh, Kingdom of Saudi Arabia
MBBS
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Abstract

Immune thrombocytopenia (ITP) is an autoimmune disorder marked by low platelet counts that puts patients at risk for spontaneous bleeding. A rare trigger for ITP is iron repletion, which has only been reported in a few cases. In this article, we present a unique case of a 54-year-old male with a history of recurrent ITP who experienced rapid thrombocytopenia following iron repletion with ferrous gluconate. Discontinuation of ferrous medications resulted in platelet counts returning to the normal baseline. Following more than 30 years of the patient’s clinical timeline, this case demonstrates the chronic nature of ITP and the complexity of its causes. Further studies are needed to determine the prevalence of iron repletion-induced thrombocytopenia and its underlying mechanisms.

Keywords:
  • immune thrombocytopenia
  • iron repletion induced
  • case report

Immune thrombocytopenia (ITP) is an autoimmune condition characterized by low platelet counts under 100 x 109.1 It can be a primary condition or secondary to other diseases, such as the human immunodeficiency virus, hepatitis B and C viruses, and other autoimmune conditions.2 Chronic ITP is defined as ITP which lasts more than one year.2 Patients with chronic ITP are at an increased risk for spontaneous bleeding, especially in patients with platelet levels lesser than 30 x 109/L.3 Along with bleeding, patients frequently present with fatigue, which correlates with the degree of thrombocytopenia.4

Iron repletion is an exceedingly rare cause of ITP. Soff et al4 reported 2 cases of thrombocytopenia triggered by iron repletion using ferrous sulfate and ferrous gluconate. We report the case of a male patient with recurrent ITP who suffered from rapid thrombocytopenia following iron repletion with ferrous gluconate. By sharing this case, we aim to further shed light on this rare cause of ITP and its management. This case was reported using the 2013 Case Reports (CARE) guidelines.5

Case Report

A 54-year-old male with a history of type 2 diabetes mellitus, dyslipidemia, hypertension, coronary artery disease treated with percutaneous coronary intervention 5 years ago, and recurrent ITP presented to our clinic for evaluation. His medication history included metformin 1,000 mg twice daily, empagliflozin 12.5 mg twice daily, gliclazide 30 mg once daily, semaglutide 1 mg once weekly, atorvastatin 40 mg at bedtime, amlodipine 5 mg once daily, losartan 50 mg once daily, metoprolol 25 mg twice daily, and aspirin 81 mg once daily.

Clinical findings

The patient was being followed for health care maintenance. At one of his visits, he was started on ferrous gluconate 300 mg daily due to low ferritin levels without anemia. Five weeks later, this led to a decline in his platelet count, from 223 x 10^9/L to 89 x 10^9/L. He remained asymptomatic during this period.

Diagnostic assessment

His experience with ITP began at 21 years of age when he presented with recurrent gum bleeding and petechiae. Suspecting ITP, a bone marrow biopsy was carried out, confirming the diagnosis. He was treated with corticosteroids and advised to have annual follow-ups to monitor his platelet levels, which averaged around 100 x 10^9/L.

At 39 years old, he presented to the clinic with widespread petechiae and persistent epistaxis following a recent upper respiratory tract infection. His vital signs were stable, and laboratory tests revealed a critically low platelet count.

Therapeutic intervention

He was treated with prednisone and intravenous immunoglobulin (IV Ig), followed by a tapering course of prednisone and ranitidine. Table 1 summarizes the patient’s ITP journey.

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Table 1

- Clinical timeline of the patient presented in this manuscript.

Follow-up and outcomes

After discontinuing the ferrous medication, his platelet count increased to 144 x 10^9/L within 10 days, suggesting a diagnosis of ferrous medication-induced ITP.

Discussion

This case of a 54-year-old male with a history of recurrent ITP offers a compelling perspective on the intricate and personalized approach necessary to manage ITP. Spanning more than 30 years, this patient’s ITP journey underscores the chronic and relapsing character of the condition, necessitating meticulous management and ongoing monitoring. The effective use of corticosteroids and IV Ig in treating acute episodes of this disorder highlights the efficacy of established therapeutic strategies.

Thrombocytopenia resulting from ferrous medications is an exceedingly rare phenomenon, with less than 30 cases reported in the literature. Eisa et al6 described a case of severe iron deficiency anemia that resulted in a transient drop in platelet counts after receiving intravenous ferrous carboxy maltose. A review by Babikir et al7 found 20 patients who suffered from iron replacement-induced thrombocytopenia in 11 case reports and one case series. The patients’ ages ranged from 15-42 years, and there was a female predominance of 3:1.

Patient perspective

Interestingly, the patient in the current study remained asymptomatic during the thrombocytopenia that followed iron repletion. This may suggest a different pathophysiological mechanism or perhaps a milder form of ITP related to ferrous gluconate. Further research is needed to understand this unique response and to shed light on whether this phenomenon is specific to the type of iron supplement used.

As a single case report, generalizations from this observation must be approached with caution. More extensive studies are needed to elucidate the mechanisms by which iron repletion might provoke ITP and to determine whether this rare phenomenon is more widely applicable. These findings would have substantial implications for clinical practice, guiding physicians in their choice of iron supplementation and monitoring strategies for patients with a history of ITP.

In conclusion, this case provides valuable insights into the multifaceted nature of ITP management, underscoring the importance of comprehensive understanding, careful monitoring, and recognition of potential rare triggers. The relationship between iron repletion and ITP, while rare, warrants further attention and investigation to facilitate a better understanding and management of this complex disease.

Acknowledgment

The authors gratefully acknowledge Scribendi for their English language editing.

Footnotes

  • Disclosure. Authors have no conflict of interests, and the work was not supported or funded by any drug company.

  • Received December 20, 2023.
  • Accepted May 16, 2024.
  • Copyright: © Saudi Medical Journal

This is an Open Access journal and articles published are distributed under the terms of the Creative Commons Attribution-NonCommercial License (CC BY-NC). Readers may copy, distribute, and display the work for non-commercial purposes with the proper citation of the original work.

References

  1. 1.↵
    1. Segal JB,
    2. Powe NR
    . Prevalence of immune thrombocytopenia: analyses of administrative data. J Thromb Haemost 2006; 4: 2377-2383.
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  2. 2.↵
    1. Audia S,
    2. Mahévas M,
    3. Samson M,
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    . Pathogenesis of immune thrombocytopenia. Autoimmun Rev 2017; 16: 620-632.
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  3. 3.↵
    1. Bussel J,
    2. Cooper N,
    3. Boccia R,
    4. Zaja F,
    5. Newland A
    . Immune thrombocytopenia. Expert Rev Hematol 2021; 14: 1013-1025.
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    1. Newton JL,
    2. Reese JA,
    3. Watson SI,
    4. Vesely SK,
    5. Bolton-Maggs PH,
    6. George JN, et al.
    Fatigue in adult patients with primary immune thrombocytopenia. Eur J Haematol 2011; 86: 420-429.
    OpenUrlCrossRefPubMed
  5. 5.↵
    1. Gagnier JJ,
    2. Kienle G,
    3. Altman DG,
    4. Moher D,
    5. Sox H,
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    . The CARE guidelines: consensus-based clinical case reporting guideline development. Glob Adv Health Med 2013; 2: 38-43.
    OpenUrlPubMed
  6. 6.↵
    1. Eisa MS,
    2. Al-Tikrity MA,
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    . Thrombocytopenia secondary to iron deficiency anemia responding to iron therapy. Clin Case Rep 2021; 9: 10.1002/ccr3.3983.
  7. 7.↵
    1. Babikir M,
    2. Ahmad R,
    3. Soliman A,
    4. Al-Tikrity M,
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    . Iron-induced thrombocytopenia: a mini-review of the literature and suggested mechanisms. Cureus 2020; 12: e10201.
    OpenUrl
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Thrombocytopenia following iron repletion with ferrous gluconate
Aljoharah A. Al Saud, Muneerah R. AlRomaizan, Muath A. Alkhunizan
Saudi Medical Journal Aug 2024, 45 (8) 848-850; DOI: 10.15537/smj.2024.45.8.20231003

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Thrombocytopenia following iron repletion with ferrous gluconate
Aljoharah A. Al Saud, Muneerah R. AlRomaizan, Muath A. Alkhunizan
Saudi Medical Journal Aug 2024, 45 (8) 848-850; DOI: 10.15537/smj.2024.45.8.20231003
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© 2025 Saudi Medical Journal Saudi Medical Journal is copyright under the Berne Convention and the International Copyright Convention.  Saudi Medical Journal is an Open Access journal and articles published are distributed under the terms of the Creative Commons Attribution-NonCommercial License (CC BY-NC). Readers may copy, distribute, and display the work for non-commercial purposes with the proper citation of the original work. Electronic ISSN 1658-3175. Print ISSN 0379-5284.

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