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Revision as of 05:09, 17 February 2012 editBeetstra (talk | contribs)Edit filter managers, Administrators172,031 edits Saving copy of the {{drugbox}} taken from revid 466258424 of page Alemtuzumab for the Chem/Drugbox validation project (updated: 'DrugBank', 'ChEMBL').  Latest revision as of 02:49, 24 August 2024 edit Beland (talk | contribs)Autopatrolled, Administrators236,320 editsm convert special characters found by Misplaced Pages:Typo Team/moss (via WP:JWB) 
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{{Short description|Medication}}
{{ambox | text = This page contains a copy of the infobox ({{tl|drugbox}}) taken from revid of page ] with values updated to verified values.}}
{{Use dmy dates|date=December 2023}}
{{Drugbox
{{cs1 config |name-list-style=vanc |display-authors=6}}
{{Infobox drug
| Verifiedfields = changed | Verifiedfields = changed
| Watchedfields = changed
| verifiedrevid = 457805524
| verifiedrevid = 477317070
| type = mab
| image = Alemtuzumab Fab 1CE1.png | image = Alemtuzumab Fab 1CE1.png


<!--Monoclonal antibody data--> <!-- Monoclonal antibody data -->
| type = mab
| mab_type = mab | mab_type = mab
| source = zu/a | source = zu/a
| target = ] | target = ]


<!--Clinical data--> <!-- Clinical data -->
| tradename = Campath | tradename = Campath, Mabcampath, Lemtrada, others
| Drugs.com = {{drugs.com|monograph|alemtuzumab}} | Drugs.com = {{drugs.com|monograph|alemtuzumab}}
| MedlinePlus = a608053 | MedlinePlus = a608053
| DailyMedID = Alemtuzumab
| pregnancy_AU = B2
| legal_status = | pregnancy_AU = B3
| pregnancy_AU_comment = (Lemtrada); B2 (Mabcampath)<ref>{{cite web | title=Alemtuzumab Use During Pregnancy | website=Drugs.com | date=22 August 2022 | url=https://www.drugs.com/pregnancy/alemtuzumab.html | access-date=6 January 2024}}</ref><ref>{{cite web | url=https://www.ebs.tga.gov.au/ebs/picmi/picmirepository.nsf/pdf?OpenAgent&id=CP-2013-PI-02549-1 | title=TGA eBS - Product and Consumer Medicine Information Licence }}</ref><ref>{{cite web | url=https://www.ebs.tga.gov.au/ebs/picmi/picmirepository.nsf/pdf?OpenAgent&id=CP-2011-PI-01413-3 | title=TGA eBS - Product and Consumer Medicine Information Licence }}</ref>
| routes_of_administration =
| routes_of_administration = ]
| ATC_prefix = L04
| ATC_suffix = AG06
| ATC_supplemental =


| legal_AU = S4
<!--Pharmacokinetic data-->
| bioavailability = | legal_UK = POM
| legal_US = Rx-only
| protein_bound =
| legal_US_comment = <ref name="Campath FDA label">{{cite web | title=Campath- alemtuzumab injection | website=DailyMed | date=3 May 2023 | url=https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=4f5f7255-7abc-4328-bd1a-ceaf139ef3e0 | access-date=6 January 2024}}</ref><ref name="Lemtrada FDA label">{{cite web | title=Lemtrada- alemtuzumab injection, solution, concentrate | website=DailyMed | date=23 May 2023 | url=https://dailymed.nlm.nih.gov/dailymed/drugInfo.cfm?setid=6236b0bc-82e9-4447-9a78-f57d94770269 | access-date=6 January 2024}}</ref>
| metabolism =
| legal_EU = Rx-only
| legal_EU_comment = <ref>{{cite web | website=European Medicines Agency | title=Lemtrada EPAR | date=12 September 2013 | url=https://www.ema.europa.eu/en/medicines/human/EPAR/lemtrada | access-date=6 January 2024}}</ref>

<!-- Pharmacokinetic data -->
| bioavailability =
| protein_bound =
| metabolism =
| elimination_half-life = ~288 hrs | elimination_half-life = ~288 hrs


<!--Identifiers--> <!-- Identifiers -->
| CAS_number_Ref = {{cascite|correct|??}} | CAS_number_Ref = {{cascite|correct|??}}
| CAS_number = 216503-57-0 | CAS_number = 216503-57-0
| ATC_prefix = L01 | PubChem =
| DrugBank_Ref = {{drugbankcite|correct|drugbank}}
| ATC_suffix = XC04
| ATC_supplemental =
| PubChem =
| DrugBank_Ref = {{drugbankcite|changed|drugbank}}
| DrugBank = DB00087 | DrugBank = DB00087
| ChemSpiderID_Ref = {{chemspidercite|changed|chemspider}}
| ChemSpiderID = none
| UNII_Ref = {{fdacite|correct|FDA}} | UNII_Ref = {{fdacite|correct|FDA}}
| UNII = 3A189DH42V | UNII = 3A189DH42V
| KEGG = D02802
| ChEMBL_Ref = {{ebicite|changed|EBI}} | ChEMBL_Ref = {{ebicite|changed|EBI}}
| ChEMBL = <!-- blanked - oldvalue: 1201587 --> | ChEMBL = 1201587
| ChemSpiderID_Ref = {{chemspidercite|correct|chemspider}}
| ChemSpiderID = NA


<!--Chemical data--> <!-- Chemical data -->
| C=6468 | H=10066 | N=1732 | O=2005 | S=40 | C=6468 | H=10066 | N=1732 | O=2005 | S=40
| molecular_weight = 145453.8 g/mol
}} }}

<!-- Definition and medical uses -->
'''Alemtuzumab''', sold under the brand names '''Campath''' and '''Lemtrada''' among others, is a ] used to treat ] and ].<ref name=AHFS2019>{{cite web |title=Alemtuzumab Monograph for Professionals |url=https://www.drugs.com/monograph/alemtuzumab.html |website=Drugs.com |publisher=American Society of Health-System Pharmacists |access-date=15 July 2019 }}</ref> In chronic lymphocytic leukemia, it has been used as both a first line and second line treatment.<ref name=AHFS2019/> It is given by ].<ref name=AHFS2019/>

It is a ] that binds to ], a protein present on the surface of mature ]s, but not on the ]s from which these lymphocytes are derived. After treatment with alemtuzumab, these CD52-bearing lymphocytes are targeted for destruction.

Alemtuzumab was approved for medical use in the United States in 2001.<ref name=AHFS2019/> (Mab)Campath was withdrawn from the markets in the US and the EU in 2012, to prepare for a higher-priced relaunch of Lemtrada aimed at multiple sclerosis.<ref name=pt/>

== Medical uses ==

===Chronic lymphocytic leukemia===
Alemtuzumab is used for the treatment of B-cell chronic lymphocytic leukemia in people who have been treated with alkylating agents and who have failed ] therapy. It is an unconjugated antibody, thought to work via the activation of ].<ref>{{cite web|url=http://www.campath.com/hcp/AboutCampath.html |title=About Campath |publisher=Genzyme |url-status=dead |archive-url=https://web.archive.org/web/20110714063804/http://www.campath.com/hcp/AboutCampath.html |archive-date=2011-07-14 }}</ref>{{Unreliable medical source|date=January 2024}}

===Multiple sclerosis===
It is used for the relapsing remitting form of multiple sclerosis.<ref name=AHFS2019/> A 2017 Cochrane meta-analysis of studies comparing alemtuzumab to interferon beta 1a concluded that annual cycles of alemtuzumab probably reduces the proportion of people that experience relapse and may reduce the proportion of people who experience disability worsening and new T2 lesions on MRI, with adverse events found to be similarly high for both treatments.<ref name=":0">{{cite journal | vauthors = Zhang J, Shi S, Zhang Y, Luo J, Xiao Y, Meng L, Yang X | title = Alemtuzumab versus interferon beta 1a for relapsing-remitting multiple sclerosis | journal = The Cochrane Database of Systematic Reviews | volume = 11 | issue = 11 | pages = CD010968 | date = November 2017 | pmid = 29178444 | pmc = 6486233 | doi = 10.1002/14651858.CD010968.pub2 }}</ref> However the low-to-moderate levels of evidence in the included, existing studies were noted and the need for larger high-quality randomised, double-blind, controlled trials comparing mono or combination therapy with alemtuzumab was highlighted.<ref name=":0" />

== Contraindications ==
Alemtuzumab is contraindicated in patients who have active infections, underlying immunodeficiency (e.g., seropositive for HIV), or known type I hypersensitivity or anaphylactic reactions to the substance.<ref name="Lemtrada FDA label" />

== Adverse effects==
In November 2018, the US ] (FDA) issued a safety announcement<ref>{{cite web | title = FDA warns about rare but serious risks of stroke and blood vessel wall tears with multiple sclerosis drug Lemtrada (alemtuzumab) | work = FDA Drug Safety Communication | publisher = U.S. ] (FDA) | date = 29 November 2018 | url = https://www.fda.gov/media/118875/download }}</ref> warning about rare but serious instances of stroke and blood vessel wall tears in multiple sclerosis patients who have received Lemtrada (alemtuzumab), mostly occurring within one day of initiating treatment and leading in some cases to permanent disability and even death.

In addition to the 13 cases to which the FDA safety announcement refers, a further five cases of spontaneous intracranial hemorrhage have been retrospectively identified from four US multiple sclerosis centers in correspondence published online in February 2019.<ref>{{cite journal | vauthors = Azevedo CJ, Kutz C, Dix A, Boster A, Sanossian N, Kaplan J | title = Intracerebral haemorrhage during alemtuzumab administration | journal = The Lancet. Neurology | volume = 18 | issue = 4 | pages = 329–331 | date = April 2019 | pmid = 30777657 | doi = 10.1016/S1474-4422(19)30076-6 | s2cid = 72334305 }}</ref>

In April 2019, the (PRAC) of the ] (EMA) reported that it has started a review of the multiple sclerosis medicine Lemtrada (alemtuzumab) following new reports of immune-mediated conditions and of problems with the heart and blood vessels with this medicine, including fatal cases. The PRAC advised that while the review is ongoing, Lemtrada should only be started in adults with relapsing-remitting multiple sclerosis that is highly active despite treatment with at least two disease-modifying therapies (a type of multiple sclerosis medicine) or where other disease-modifying therapies cannot be used. The PRAC further advised that patients being treated with Lemtrada who are benefitting from it may continue treatment in consultation with their doctor.<ref>{{cite web | title = Use of multiple sclerosis medicine Lemtrada restricted while PRAC review is ongoing | work = Meeting highlights from the Pharmacovigilance Risk Assessment Committee (PRAC) | publisher = European Medicines Agency | date = 12 April 2019 | url = https://www.ema.europa.eu/en/news/meeting-highlights-pharmacovigilance-risk-assessment-committee-prac-8-11-april-2019}}</ref>

Very common adverse reactions associated with alemtuzumab infusion in people with multiple sclerosis include upper respiratory tract and urinary tract infections, herpes virus infections, lymphopenia, leucopenia, changes in thyroid function, tachycardia, skin rashes, pruritus, pyrexia, and fatigue.<ref>{{cite web|url=https://www.medicines.org.uk/emc/product/5409#UNDESIRABLE_EFFECTS|title=LEMTRADA 12 mg concentrate for solution for infusion - Summary of Product Characteristics (SMPC) - (Emc)|access-date=7 April 2019|archive-date=6 May 2021|archive-url=https://web.archive.org/web/20210506131642/https://www.medicines.org.uk/emc/product/5409#UNDESIRABLE_EFFECTS|url-status=dead}}</ref> The Summary of Product Characteristics provided in the electronic Medicines Compendium further lists common and uncommon adverse reactions that have been reported for Lemtrada, which include serious opportunistic nocardial infections and cytomegalovirus syndrome.<ref name=Sheikh-Taha2017>{{cite journal | vauthors = Sheikh-Taha M, Corman LC | title = Pulmonary Nocardia beijingensis infection associated with the use of alemtuzumab in a patient with multiple sclerosis | journal = Multiple Sclerosis | volume = 23 | issue = 6 | pages = 872–874 | date = May 2017 | pmid = 28290754 | doi = 10.1177/1352458517694431 | s2cid = 206702778 }}</ref><ref name=Clerico2017>{{cite journal | vauthors = Clerico M, De Mercanti S, Artusi CA, Durelli L, Naismith RT | title = Active CMV infection in two patients with multiple sclerosis treated with alemtuzumab | journal = Multiple Sclerosis | volume = 23 | issue = 6 | pages = 874–876 | date = May 2017 | pmid = 28290755 | doi = 10.1177/1352458516688350 | s2cid = 206702649 }}</ref><ref name=Brownlee2017>{{cite journal | vauthors = Brownlee WJ, Chataway J | title = Opportunistic infections after alemtuzumab: New cases of norcardial infection and cytomegalovirus syndrome | journal = Multiple Sclerosis | volume = 23 | issue = 6 | pages = 876–877 | date = May 2017 | pmid = 28290753 | doi = 10.1177/1352458517693440 | s2cid = 30519152 | url = https://discovery.ucl.ac.uk/id/eprint/1537542/ }}</ref>

Alemtuzumab can also precipitate ] through the suppression of ] populations and/or the emergence of autoreactive B-cells.<ref name=Costelloe2012>{{cite journal | vauthors = Costelloe L, Jones J, Coles A | title = Secondary autoimmune diseases following alemtuzumab therapy for multiple sclerosis | journal = Expert Review of Neurotherapeutics | volume = 12 | issue = 3 | pages = 335–341 | date = March 2012 | pmid = 22364332 | doi = 10.1586/ern.12.5 | s2cid = 34738692 }}</ref><ref name=Aranha2013>{{cite journal | vauthors = Aranha AA, Amer S, Reda ES, Broadley SA, Davoren PM | title = Autoimmune thyroid disease in the use of alemtuzumab for multiple sclerosis: a review | journal = Endocrine Practice | volume = 19 | issue = 5 | pages = 821–828 | date = 2013 | pmid = 23757618 | doi = 10.4158/EP13020.RA }}</ref>

Cases of multiple sclerosis reactivation/relapse have also been reported<ref>{{cite journal | vauthors = Wehrum T, Beume LA, Stich O, Mader I, Mäurer M, Czaplinski A, Weiller C, Rauer S | title = Activation of disease during therapy with alemtuzumab in 3 patients with multiple sclerosis | journal = Neurology | volume = 90 | issue = 7 | pages = e601–e605 | date = February 2018 | pmid = 29352101 | doi = 10.1212/WNL.0000000000004950 | s2cid = 3319939 }}</ref>

== Biochemical properties ==
Alemtuzumab is a recombinant DNA-derived humanized ] kappa monoclonal antibody that is directed against the cell surface glycoprotein ].<ref name="Klement">{{cite journal| vauthors = Klement A | date = 7 January 2014| title = Multiple-Sklerose-Behandlung| journal = Österreichische Apothekerzeitung| issue = 1/2014| page = 24f| language = de}}</ref>

== History ==
The origins of alemtuzumab date back to Campath-1 which was derived from the rat antibodies raised against human lymphocyte proteins by ] and colleagues in 1983.<ref>{{cite journal | vauthors = Hale G, Bright S, Chumbley G, Hoang T, Metcalf D, Munro AJ, Waldmann H | title = Removal of T cells from bone marrow for transplantation: a monoclonal antilymphocyte antibody that fixes human complement | journal = Blood | volume = 62 | issue = 4 | pages = 873–882 | date = October 1983 | pmid = 6349718 | doi = 10.1182/blood.V62.4.873.873 | doi-access = free | title-link = doi }}</ref> The name Campath derives from the ''path''ology department of ].

Initially, Campath-1 was not ideal for therapy because patients could, in theory, react against the foreign rat protein determinants of the antibody. To circumvent this problem, ] and his colleagues humanised Campath-1, by extracting the ] that had specificity for CD52 and grafting them onto a human antibody framework. This became known as Campath-1H and serves as the basis for alemtuzumab.<ref name=pmid3127726>{{cite journal | vauthors = Riechmann L, Clark M, Waldmann H, Winter G | title = Reshaping human antibodies for therapy | journal = Nature | volume = 332 | issue = 6162 | pages = 323–327 | date = March 1988 | pmid = 3127726 | doi = 10.1038/332323a0 | s2cid = 4335569 | doi-access = free | title-link = doi | bibcode = 1988Natur.332..323R }}</ref>

While alemtuzumab started life as a laboratory tool for understanding the immune system, within a short time it was clinically investigated for use to improve the success of bone marrow transplants and as a treatment for leukaemia, lymphoma, vasculitis, organ transplants, rheumatoid arthritis and multiple sclerosis.<ref>{{cite web|url=http://www.whatisbiotechnology.org/exhibitions/campath|title=The life story of a biotechnology drug: Alemtuzumab|publisher=What is Biotechnology?}}</ref>

== Society and culture ==
=== Economics ===
Campath as a medication was first approved for B-cell chronic lymphocytic leukemia in 2001. It is marketed by ], which acquired the worldwide rights from ] in 2009. Genzyme was bought by ] in 2011. In August/September 2012 Campath was withdrawn from the markets in the US and EU. This was done to prevent ] of the drug to treat multiple sclerosis and to prepare for a relaunch under the brand name Lemtrada, with a different dosage aimed at multiple sclerosis treatment, this is expected to be much higher-priced.<ref name=pt>{{cite news | title=Sanofi withdraws Campath in US and EU | vauthors=McKee S | date=21 August 2012 | work=Pharma Times Online | publisher=Pharma Times | url=http://www.pharmatimes.com/Article/12-08-21/Sanofi_withdraws_Campath_in_US_and_EU.aspx | access-date=6 November 2012 | archive-date=4 March 2016 | archive-url=https://web.archive.org/web/20160304031613/http://www.pharmatimes.com/Article/12-08-21/Sanofi_withdraws_Campath_in_US_and_EU.aspx | url-status=dead }}</ref>

In February 2011, Sanofi-Aventis, since renamed ], acquired Genzyme, the manufacturer of alemtuzumab.<ref>{{cite news | title=Sanofi Buys Genzyme for over $20 billion | date=17 February 2011 | vauthors = Whalen J, Spencer M | url=https://www.wsj.com/articles/SB10001424052748703373404576147483489656732 | work=] | url-access = subscription}}</ref> The acquisition was delayed by a dispute between the two companies regarding the value of alemtuzumab.

In August 2012, Genzyme surrendered the license for all presentations of alemtuzumab,<ref>{{cite web | title=Discontinuation of licensed supplies of alemtuzumab (Mabcampath) | vauthors = Hussein J | url = http://www.medicinesresources.nhs.uk/upload/documents/News/2012/Sanofil%20letter.pdf | publisher=National Institute for Health and Care Excellence | location=United Kingdom | date=9 August 2012 }}</ref> pending regulatory approval to reintroduce it as a treatment for ]. Concerns<ref>{{cite news|title=Multiple sclerosis: New drug 'most effective'|url=https://www.bbc.co.uk/news/health-20151891|access-date=1 November 2012|newspaper=BBC News|date=1 November 2012}}</ref> that Genzyme would later bring to market the same product at a much higher price proved correct.

=== Names ===
Alemtuzumab is the ].<ref>{{cite journal | vauthors = ((World Health Organization)) | year = 2023 | title = International nonproprietary names for pharmaceutical substances (INN): recommended INN: list 90 | journal = WHO Drug Information | volume = 37 | issue = 3 | hdl = 10665/373341 | hdl-access = free | author-link = World Health Organization }}</ref>

== Research ==

===Antiviral properties===
In an in-vitro experiment, it has been shown that alemtuzumab has antiviral properties against ].<ref>{{cite journal | vauthors = Ruxrungtham K, Sirivichayakul S, Buranapraditkun S, Krause W | title = Alemtuzumab-induced elimination of HIV-1-infected immune cells | journal = Journal of Virus Eradication | volume = 2 | issue = 1 | pages = 12–18 | date = January 2016 | pmid = 27482429 | pmc = 4946689 | doi = 10.1016/S2055-6640(20)30694-4 }}</ref>

===Graft-versus-host disease===
A 2009 retrospective study of alemtuzumab (10&nbsp;mg IV weekly) in 20 patients (no controls) with severe steroid-resistant acute intestinal ] after allogeneic ] (HSCT) demonstrated improvement. Overall response rate was 70%, with complete response in 35%.<ref name=Schn2009/> In this study, the median survival was 280 days. Important complications following this treatment included ] reactivation, bacterial infection, and invasive ] infection.<ref name=Schn2009>{{cite journal | vauthors = Schnitzler M, Hasskarl J, Egger M, Bertz H, Finke J | title = Successful treatment of severe acute intestinal graft-versus-host resistant to systemic and topical steroids with alemtuzumab | journal = Biology of Blood and Marrow Transplantation | volume = 15 | issue = 8 | pages = 910–918 | date = August 2009 | pmid = 19589480 | doi = 10.1016/j.bbmt.2009.04.002 | doi-access = free | title-link = doi }} </ref>

== References ==
{{reflist}}

== External links ==
*
* {{cite web | title=Alemtuzumab | website=National Cancer Institute | date=30 November 2007 | url=https://www.cancer.gov/about-cancer/treatment/drugs/alemtuzumab }}

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