{"id":18874,"date":"2026-02-24T12:04:05","date_gmt":"2026-02-24T11:04:05","guid":{"rendered":"https:\/\/www.fondationpierrefabre.org\/?post_type=avada_faq&#038;p=18874"},"modified":"2026-04-30T23:50:43","modified_gmt":"2026-04-30T21:50:43","slug":"quelle-est-la-cause-de-la-drepanocytose","status":"publish","type":"avada_faq","link":"https:\/\/www.fondationpierrefabre.org\/fr\/faq-items\/quelle-est-la-cause-de-la-drepanocytose\/","title":{"rendered":"Quelle est la cause de la dr\u00e9panocytose ?"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-margin-bottom:30px;--awb-background-color:#f2f2f2;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-one-full fusion-column-first fusion-column-last\" style=\"--awb-bg-size:cover;\"><div class=\"fusion-column-wrapper fusion-flex-column-wrapper-legacy\"><div class=\"fusion-text fusion-text-1\"><h1 style=\"text-align: center;\">Quelle est la cause de la dr\u00e9panocytose ?<\/h1>\n<\/div><div class=\"fusion-clearfix\"><\/div><\/div><\/div><\/div><\/div><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-2 has-pattern-background has-mask-background nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-1 fusion_builder_column_1_1 1_1 fusion-one-full fusion-column-first fusion-column-last\" style=\"--awb-bg-size:cover;\"><div class=\"fusion-column-wrapper fusion-flex-column-wrapper-legacy\"><div class=\"fusion-text fusion-text-2 fusion-text-no-margin\" style=\"--awb-margin-bottom:25px;\"><h2>Comment la Dr\u00e9panocytose est-elle transmise et diagnostiqu\u00e9e ?<\/h2>\n<p>La dr\u00e9panocytose n\u2019est pas une maladie contagieuse ; elle se transmet g\u00e9n\u00e9tiquement par les parents \u00e0 leurs enfants. Un enfant doit h\u00e9riter d\u2019une copie du g\u00e8ne mut\u00e9 de chacun de ses parents pour d\u00e9velopper la forme la plus s\u00e9v\u00e8re de la maladie. Si l\u2019enfant h\u00e9rite d\u2019une seule copie, il sera porteur du trait dr\u00e9panocytaire, sans d\u00e9velopper la maladie.<\/p>\n<p><img decoding=\"async\" class=\"lazyload alignnone wp-image-19457 size-medium\" src=\"https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-12-scaled-e1771929748843-300x169.jpg\" data-orig-src=\"https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-12-scaled-e1771929748843-300x169.jpg\" alt=\"\" width=\"300\" height=\"169\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27300%27%20height%3D%27169%27%20viewBox%3D%270%200%20300%20169%27%3E%3Crect%20width%3D%27300%27%20height%3D%27169%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-12-scaled-e1771929748843-200x113.jpg 200w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-12-scaled-e1771929748843-280x157.jpg 280w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-12-scaled-e1771929748843-300x169.jpg 300w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-12-scaled-e1771929748843-320x180.jpg 320w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-12-scaled-e1771929748843-400x226.jpg 400w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-12-scaled-e1771929748843-600x339.jpg 600w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-12-scaled-e1771929748843-768x434.jpg 768w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-12-scaled-e1771929748843-800x452.jpg 800w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-12-scaled-e1771929748843-1024x578.jpg 1024w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-12-scaled-e1771929748843-1200x678.jpg 1200w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-12-scaled-e1771929748843-1536x868.jpg 1536w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 300px) 100vw, 300px\" \/><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"margin-left: auto;margin-right: auto;margin-top:10px;width:100%;\"><\/div><div class=\"fusion-sep-clear\"><\/div><\/p>\n<p>Le diagnostic de la dr\u00e9panocytose se fait habituellement par un test sanguin qui peut identifier la pr\u00e9sence de l\u2019h\u00e9moglobine S. Des tests plus sp\u00e9cifiques, comme l\u2019\u00e9lectrophor\u00e8se de l\u2019h\u00e9moglobine, peuvent \u00e9galement d\u00e9terminer le type sp\u00e9cifique de dr\u00e9panocytose. Aujourd\u2019hui, il existe des tests de diagnostics rapides et fiables pour d\u00e9pister la dr\u00e9panocytose.<\/p>\n<p><img decoding=\"async\" class=\"lazyload alignnone wp-image-19455\" src=\"https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-11-e1771929567790-288x300.png\" data-orig-src=\"https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-11-e1771929567790-288x300.png\" alt=\"\" width=\"300\" height=\"313\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27300%27%20height%3D%27313%27%20viewBox%3D%270%200%20300%20313%27%3E%3Crect%20width%3D%27300%27%20height%3D%27313%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-11-e1771929567790-200x209.png 200w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-11-e1771929567790-288x300.png 288w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-11-e1771929567790-400x417.png 400w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-11-e1771929567790-600x626.png 600w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-11-e1771929567790-768x801.png 768w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-11-e1771929567790-800x835.png 800w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-11-e1771929567790.png 808w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"margin-left: auto;margin-right: auto;margin-top:10px;width:100%;\"><\/div><div class=\"fusion-sep-clear\"><\/div>\n<p>En savoir plus : <a href=\"\/fr\/faq-items\/quels-sont-les-symptomes-de-la-drepanocytose\/\" target=\"_blank\" rel=\"noopener\">Quand se d\u00e9clare la dr\u00e9panocytose ?<\/a><\/p>\n<\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"margin-left: auto;margin-right: auto;margin-top:30px;width:100%;\"><\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-text fusion-text-3 fusion-text-no-margin\" style=\"--awb-margin-bottom:25px;\"><h2>Quel est le risque d\u2019avoir un enfant atteint de dr\u00e9panocytose ? Et que faire si on est \u00e0 risque ?<\/h2>\n<p>La transmission \u00e9tant h\u00e9r\u00e9ditaire, le risque d\u00e9pend des g\u00e8nes port\u00e9s par les 2 parents. Les couples pr\u00e9sentant ce risque sont porteurs du trait ou malades de la dr\u00e9panocytose eux-m\u00eames.<\/p>\n<p>Il est important pour les parents de connaitre leur statut afin de connaitre le risque d\u2019avoir un b\u00e9b\u00e9 malade.<\/p>\n<ul>\n<li>Si les 2 parents sont dr\u00e9panocytaires, tous les enfants seront dr\u00e9panocytaires.<\/li>\n<li>Si un des parents est dr\u00e9panocytaire et l\u2019autre porteur du trait, le risque est de 50% pour chaque nouveau-n\u00e9 d\u2019\u00eatre dr\u00e9panocytaire et 50% d\u2019\u00eatre porteur du trait.<\/li>\n<li>Si l\u2019un des 2 parents est porteur du trait et l\u2019autre ne l\u2019est pas, le risque d\u2019avoir des enfants porteurs du trait est de 50% et il n\u2019y a aucun risque d\u2019avoir un enfant malade.<\/li>\n<li>Si les 2 parents sont porteurs du trait, le risque est de 25 % pour chaque nouveau-n\u00e9 d\u2019\u00eatre dr\u00e9panocytaire, 50% d\u2019\u00eatre porteur du trait et 25 % d\u2019\u00eatre ni dr\u00e9panocytaire ni porteur du trait.<\/li>\n<\/ul>\n<div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"margin-left: auto;margin-right: auto;margin-top:10px;width:100%;\"><\/div><div class=\"fusion-sep-clear\"><\/div>\n<p>Il est fortement recommand\u00e9 aux couples de connaitre leur statut h\u00e9moglobinique avant d\u2019envisager d\u2019avoir des enfants.<\/p>\n<p>Les couples \u00e0 risque (porteurs du trait et dr\u00e9panocytaires) peuvent b\u00e9n\u00e9ficier de conseils g\u00e9n\u00e9tiques pour \u00e9valuer le risque de transmettre la maladie.<\/p>\n<p><img decoding=\"async\" class=\"lazyload wp-image-19462 size-medium alignnone\" src=\"https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-21-300x250.jpg\" data-orig-src=\"https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-21-300x250.jpg\" alt=\"\" width=\"300\" height=\"250\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27300%27%20height%3D%27250%27%20viewBox%3D%270%200%20300%20250%27%3E%3Crect%20width%3D%27300%27%20height%3D%27250%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-21-200x167.jpg 200w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-21-300x250.jpg 300w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-21-400x334.jpg 400w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-21-600x500.jpg 600w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-21-768x641.jpg 768w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-21-800x667.jpg 800w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-21-1024x854.jpg 1024w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-21-1200x1001.jpg 1200w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/02\/quelle-est-la-cause-de-la-drepanocytose-21.jpg 1223w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"margin-left: auto;margin-right: auto;margin-top:10px;width:100%;\"><\/div><div class=\"fusion-sep-clear\"><\/div>\n<p>En savoir plus : <a href=\"\/fr\/faq-items\/quels-sont-les-symptomes-de-la-drepanocytose\/\" target=\"_blank\" rel=\"noopener\">Quels sont les signes cliniques de la dr\u00e9panocytose ?<\/a><\/p>\n<\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"margin-left: auto;margin-right: auto;margin-top:30px;width:100%;\"><\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-text fusion-text-4 fusion-text-no-margin\" style=\"--awb-margin-bottom:25px;\"><h2>Pourquoi certaines populations sont-elles plus touch\u00e9es ?<\/h2>\n<p>La dr\u00e9panocytose est plus fr\u00e9quente dans certaines r\u00e9gions du monde, notamment en Afrique subsaharienne, en raison d\u2019une mutation g\u00e9n\u00e9tique qui a d\u00e9but\u00e9 dans cette r\u00e9gion du monde et qui offrait une protection contre le paludisme. La s\u00e9lection naturelle a augment\u00e9 la pr\u00e9sence du g\u00e8ne de la dr\u00e9panocytose dans ces populations.<\/p>\n<p><img decoding=\"async\" class=\"lazyload alignnone wp-image-19559 size-medium\" src=\"https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/03\/PLC-9-300x212.jpg\" data-orig-src=\"https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/03\/PLC-9-300x212.jpg\" alt=\"\" width=\"300\" height=\"212\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27300%27%20height%3D%27212%27%20viewBox%3D%270%200%20300%20212%27%3E%3Crect%20width%3D%27300%27%20height%3D%27212%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-srcset=\"https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/03\/PLC-9-200x141.jpg 200w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/03\/PLC-9-300x212.jpg 300w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/03\/PLC-9-400x283.jpg 400w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/03\/PLC-9-600x424.jpg 600w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/03\/PLC-9-768x543.jpg 768w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/03\/PLC-9-800x566.jpg 800w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/03\/PLC-9-1024x724.jpg 1024w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/03\/PLC-9-1200x848.jpg 1200w, https:\/\/www.fondationpierrefabre.org\/wp-content\/uploads\/sites\/2\/2026\/03\/PLC-9-1536x1086.jpg 1536w\" data-sizes=\"auto\" data-orig-sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>En savoir plus : <a href=\"\/fr\/faq-items\/quels-sont-les-symptomes-de-la-drepanocytose\/\" target=\"_blank\" rel=\"noopener\">Comment \u00e9volue la dr\u00e9panocytose ?<\/a><\/p>\n<\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-separator fusion-full-width-sep\" style=\"margin-left: auto;margin-right: auto;margin-top:30px;width:100%;\"><\/div><div class=\"fusion-sep-clear\"><\/div><div class=\"fusion-text fusion-text-5 fusion-text-no-margin\" style=\"--awb-margin-bottom:35px;\"><p><span style=\"font-size: 10pt;\"><strong>R\u00e9f\u00e9rences ___________________________________________________________<br \/>\n<\/strong><em>Organisation Mondiale de la Sant\u00e9. (2020). Dr\u00e9panocytose.<\/em><\/span><br \/>\n<span style=\"font-size: 10pt;\"><em>National Heart, Lung, and Blood Institute. (2022). What Is Sickle Cell Disease?<\/em><\/span><br \/>\n<span style=\"font-size: 10pt;\"><em>Centers for Disease Control and Prevention. (2021). Sickle Cell Disease.<\/em><\/span><\/p>\n<\/div><div class=\"fusion-clearfix\"><\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 fusion_builder_column_1_1 1_1 fusion-one-full fusion-column-first fusion-column-last mod-focus\" style=\"--awb-padding-top:0px;--awb-padding-right:20px;--awb-padding-bottom:0px;--awb-padding-left:20px;--awb-bg-size:cover;--awb-border-color:#717171;--awb-border-bottom:0;--awb-border-style:solid;--awb-margin-top:20px;--awb-margin-bottom:20px;\"><div class=\"fusion-column-wrapper fusion-flex-column-wrapper-legacy\"><div class=\"fusion-text fusion-text-6\"><h3>Questions connexes<\/h3>\n<\/div><div class=\"fusion-text fusion-text-7\" style=\"--awb-margin-top:20px;\"><p style=\"text-align: center; line-height: 3em;\"><span style=\"font-size: 18pt;\"><strong><a href=\"\/fr\/faq-items\/quest-ce-que-la-drepanocytose\/\" target=\"_blank\" rel=\"noopener\">Qu&rsquo;est-ce que la dr\u00e9panocytose ?<\/a><\/strong><\/span><br \/>\n<span style=\"font-size: 18pt;\"><strong><a href=\"\/fr\/faq-items\/quels-sont-les-symptomes-de-la-drepanocytose\/\" target=\"_blank\" rel=\"noopener\">Quels sont les sympt\u00f4mes de la dr\u00e9panocytose ?<\/a><\/strong><\/span><br \/>\n<span style=\"font-size: 18pt;\"><strong><a href=\"\/fr\/faq-items\/comment-vivre-avec-la-drepanocytose\/\" target=\"_blank\" rel=\"noopener\">Comment vivre avec la dr\u00e9panocytose ?<\/a><\/strong><\/span><br \/>\n<span style=\"font-size: 18pt;\"><strong><a href=\"\/fr\/faq-items\/comment-lutter-contre-la-drepanocytose\/\" target=\"_blank\" rel=\"noopener\">Comment lutter contre la dr\u00e9panocytose ?<\/a><\/strong><\/span><\/p>\n<\/div><div class=\"fusion-clearfix\"><\/div><\/div><\/div><\/div><\/div><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":2,"featured_media":18853,"menu_order":1,"comment_status":"closed","ping_status":"closed","template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"faq_category":[572],"class_list":["post-18874","avada_faq","type-avada_faq","status-publish","format-standard","has-post-thumbnail","hentry","faq_category-drepanocytose"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Quelle est la cause de la dr\u00e9panocytose ? 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