We use cookies to so our web site can function correctly. By Clicking "OK" or by clicking into any content on this site, you agree to allow cookies to be placed. To find out more visit the cookies section of our privacy policy.

Privacy Statement

A cookie is a small file which asks permission to be placed on your computer's hard drive. Once you agree, the file is added and the cookie helps analyse web traffic or lets you know when you visit a particular site. Cookies allow web applications to respond to you as an individual. The web application can tailor its operations to your needs, likes and dislikes by gathering and remembering information about your preferences.

We use traffic log cookies to identify which pages are being used. This helps us analyse data about web page traffic and improve our website in order to tailor it to customer needs. We only use this information for statistical analysis purposes.

Overall, cookies help us provide you with a better website, by enabling us to monitor which pages you find useful and which you do not. A cookie in no way gives us access to your computer or any information about you, other than the data you choose to share with us.

Cookie group mandatory

(Req)
These cookies are necessary for the website to function and cannot be switched off in our systems. They are usually only set in response to actions made by you which amount to a request for services, such as setting your privacy preferences, logging in or filling in forms.
You can set your browser to block or alert you about these cookies, but some parts of the site will not then work. These cookies do not store any personally identifiable information.

These cookies are required

Functional

These cookies allow us to adtertise our products to you and allow us to pass this information on to our trusted third parties so that they can advertise our products to you on our behalf
All information these cookies collect is aggregated and therefore anonymous. No personal inforation is shared to third parties. Any personal information collected while using our website could be used for direct marketing from HCA only

Marketing

These cookies allow us to advertise our products to you and allow us to pass this information on to our trusted third parties so that they can advertise our products to you on our behalf
All information these cookies collect is aggregated and therefore anonymous. No personal inforation is shared to third parties. Any personal information collected while using our website could be used for direct marketing from HCA only

Performance Cookies

These cookies allow us to know which pages are the most and least popular and see how visitors move around the site.  All information collect is annonomas unless you provide personal information to us.
If you do not allow these cookies we will not know when you have visited our site, and will not be able to monitor its performance.
Karen Breen

Dr Karen Breen

MD MRCPI FRCPath

Consultant Haematologist

Specialty
  • Haematology
Fixed Price Packages

About

  • Biography icon plus

    Dr.Karen Breen is a Consultant Haematologist with a Specialist interest Thrombosis. She currently practises at Guys and St Thomas NHS Foundation Trust, London. Her undergraduate training was at Trinity College, Dublin and postgraduate training including in Haematology was in Ireland before moving to the UK to conduct research leading to an MD. She is a member of the Royal College of Physicians of Ireland and Royal College of Pathologists, UK. She is currently involved in several clinical trials and in translational research in the Antiphospholipid syndrome, and has authored and co-authored on publications on thromboembolic disease. She is also lead of acute mangement of thrombosis and anticoagulation and a member of the Trust Thromboprophylaxis and Thrombosis Committee at Guys and St.Thomas’ Foundation Trust. She has authored several research papers and lectures nationally and internationally on a regular basis.

  • Clinical interests icon plus

    Her main area of clinical interest is in management of thrombotic and bleeding disorders. She reviews patients with deep vein thrombosis, pulmonary embolism and is an expert in anticoagulation management including the newer direct oral anticoagulants. She is experienced in advising on peri-operative management of clotting and bleeding disorders including during pregnancy. Abnormal full blood counts including anaemia and thrombocytopaenia.
  • Publications icon plus

    Rivaroxaban use in patients with antiphospholipid syndrome and previous venous thromboembolism.
    Savino S, Breen K, Hunt BJ.
    Blood Coagul Fibrinolysis. 2015 Jun;26(4):476-7.
    Endothelial and platelet microparticles in patients with antiphospholipid antibodies.
    Breen KA1, Sanchez K2, Kirkman N2, Seed PT3, Parmar K4, Moore GW2, Hunt BJ5.
    Thromb Res. 2015 Feb;135(2):368-74.

    Lack of association of serum mannose/mannan binding lectin or ficolins with complement activation in patients with antiphospholipid antibodies.
    Breen KA, Kilpatrick DC, Swierzko AS, Cedzynski M, Hunt BJ.
    Blood Coagul Fibrinolysis. 2014 Sep;25(6):644-5.


    Anticoagulation treatment
    Breen KA
    Medicine, Volume 41, Issue 4, Pages 238-241, April 2013

    Complement activation in patients with antiphospholipid antibodies and /or primary
    antiphospholipid syndrome.
    Breen KA, Seed P, Parmar K, Stuart-Smith S, Moore GW, Hunt BJ
    Thromb Haemost. 2012 Jan 11;107(3).

    Review of the pathogenesis and management of the coagulopathy of acute promyelocytic leukaemia.
    Breen KA, Grimwade D, Hunt BJ
    Br J Haematol. 2012 Jan;156(1):24-36.

    New oral anticoagulants.
    Breen KA, Hunt BJ.
    Clinical Medicine,, Vol 11, No.5, October 2011-10-25

    The Antiphospholipid syndrome
    Breen KA, Hunt BJ
    British Medical Journal point of care website, Dec 2010

    Book review: Inherited Bleeding Disorders in Women
    Breen KA, Hunt BJ,
    British Journal of Haematology, Volume 149, Issue 5, June 2010:801

    Letter to the editor submitted to BMJ May 2010: Treatment of arterial thrombosis
    Breen KA, Khamashta M, Hunt BJ
    in relation to publication, “Diagnosis and management of the antiphospholipid syndrome”,Cohen et al, BMJ. 340: p. c2541.

    Whole-body MRI versus PET in the assessment of multiple myeloma disease activity
    CP Shortt, TG Gleeson, KA Breen, J McHugh, MJ O’Connell, P O’Gorman, SJ Eustace
    AJR 2009; 192:980-986

    Serum erythropoietin at diagnosis in low grade myelodysplastic syndrome correlates
    with both red cell zinc protoporphyrin and serum lactic dehydrogenase (LDH) and
    may reflect severity of ineffective erythropoiesis.
    Murphy PT, McPherson S, Breen K, Slaby J
    Leuk Lymphoma. 2009 Jun;50(6):1036-8

  • Awards and recognitions icon plus

    Recipient of Haematology Seed Funding Award, Haematology Association of Ireland, Quality in Care Anticoagulation Award 2015, Clinical Excellence Award

  • Professional bodies icon plus

    British Society of Haematology, British Society of Haemostasis and Thrombosis, General Medical Council, International Society of Haemostasis and Thrombosis, Royal College of Physicians of Ireland, Royal College of Pathologists.

Practice locations

NHS base

Guys and St Thomas' NHS Foundation Trust

Consults at

Monday
ALT Evening
back to top