{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,9]],"date-time":"2026-03-09T01:22:20Z","timestamp":1773019340632,"version":"3.50.1"},"reference-count":18,"publisher":"BMJ","issue":"8","content-domain":{"domain":["bmj.com"],"crossmark-restriction":true},"short-container-title":["BMJ Case Rep"],"accepted":{"date-parts":[[2021,7,31]]},"published-print":{"date-parts":[[2021,8]]},"abstract":"<jats:p>Bernard Soulier syndrome is a rare, congenital platelet bleeding disorder, with autosomal recessive inheritance. It is characterised by macrothrombocytopenia and platelet dysfunction, leading to mucocutaneous bleeding noted in early childhood. This entity poses an important diagnostic challenge, and blood smear and DNA sequencing are paramount for the correct diagnosis. Differential diagnosis includes May-Hegglin anomaly, Glanzmann Thrombasthenia and von Willebrand disease; it is also often misdiagnosed as idiopathic thrombocytopenic purpura. We report a 68-year-old man diagnosed with von Willebrand disease for three decades, admitted with gastrointestinal bleeding, anaemia and severe thrombocytopenia. Replacement with von Willebrand factor did not stop the haemorrhage, suggesting another aetiology for the bleeding disorder. Corticosteroids and intravenous immune globulin were also ineffective. Genetic sequencing showed a homozygous mutation in <jats:italic>GP1BA<\/jats:italic> gene, thus establishing the correct diagnosis.<\/jats:p>","DOI":"10.1136\/bcr-2021-243518","type":"journal-article","created":{"date-parts":[[2021,8,16]],"date-time":"2021-08-16T13:09:05Z","timestamp":1629119345000},"page":"e243518","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":10,"title":["Bernard Soulier syndrome: a rare, frequently misdiagnosed and poorly managed bleeding disorder"],"prefix":"10.1136","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3435-6641","authenticated-orcid":false,"given":"Manuel","family":"Monteiro","sequence":"first","affiliation":[{"name":"Internal Medicine 1.2, Hospital de S\u00e3o Jos\u00e9, Lisboa, Portugal"}]},{"given":"Luis","family":"Almeida","sequence":"additional","affiliation":[{"name":"Internal Medicine 1.2, Hospital de S\u00e3o Jos\u00e9, Lisboa, Portugal"}]},{"given":"Mariana","family":"Morais","sequence":"additional","affiliation":[{"name":"Internal Medicine 1.2, Hospital de S\u00e3o Jos\u00e9, Lisboa, Portugal"}]},{"given":"Luis","family":"Dias","sequence":"additional","affiliation":[{"name":"Internal Medicine 1.2, Hospital de S\u00e3o Jos\u00e9, Lisboa, Portugal"}]}],"member":"239","published-online":{"date-parts":[[2021,8,16]]},"reference":[{"key":"2025082700075720000_14.8.e243518.1","doi-asserted-by":"publisher","DOI":"10.1186\/1750-1172-1-46"},{"key":"2025082700075720000_14.8.e243518.2","doi-asserted-by":"crossref","first-page":"1642","DOI":"10.18311\/ijmds\/2018\/18917","article-title":"Bernard Soulier syndrome; a rare bleeding disorder","volume":"7","author":"Tripathi","year":"2018","journal-title":"IJMDS"},{"key":"2025082700075720000_14.8.e243518.3","doi-asserted-by":"crossref","first-page":"705","DOI":"10.12669\/pjms.35.3.980","article-title":"Bernard Soulier syndrome: 10 years' experience at a tertiary care hospital","volume":"35","author":"Farhan","year":"2019","journal-title":"Pak J Med Sci"},{"key":"2025082700075720000_14.8.e243518.4","doi-asserted-by":"publisher","DOI":"10.1111\/j.1538-7836.2005.01428.x"},{"key":"2025082700075720000_14.8.e243518.5","doi-asserted-by":"publisher","DOI":"10.1182\/blood-2017-06-742692"},{"key":"2025082700075720000_14.8.e243518.6","doi-asserted-by":"crossref","first-page":"e0179566","DOI":"10.1371\/journal.pone.0179566","article-title":"Type 2B von Willebrand disease with or without large multimers: a distinction of the two sides of the disorder is long overdue","volume":"12","author":"Casonato","year":"2017","journal-title":"PLoS One"},{"key":"2025082700075720000_14.8.e243518.7","doi-asserted-by":"publisher","DOI":"10.1002\/humu.22607"},{"key":"2025082700075720000_14.8.e243518.8","doi-asserted-by":"publisher","DOI":"10.1182\/blood-2016-12-753186"},{"key":"2025082700075720000_14.8.e243518.9","unstructured":"Almomani MH , Mangla A . Bernard Soulier Syndrome [Internet]. StatPearls, 2020. 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