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MabCampath - summary of medicine characteristics

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Summary of medicine characteristics - MabCampath

2. QUALITATIVE AND QUANTITATIVE COMPOSITION

3. PHARMACEUTICAL FORM

Concentrate for solution for infusion.

Colourless to slightly yellow concentrate.

4. CLINICAL PARTICULARS4.1 Therapeutic indications

MabCampath is indicated for the treatment of patients with B-cell chronic lymphocytic leukaemia (B-

CLL) for whom fludarabine combination chemo

not appropriate


4.2 Posology and method of administration

MabCampath should be administered under the supervision of a physician experienced in the use of cancer therapy.

Posology

During the first week of treatment, MabCampath should be administered in escalating doses: 3 mg on

day 1, 10 mg on da


0 mg on day 3 assuming that each dose is well tolerated. Thereafter, the

recommended dose is 30 mg daily administered 3 times weekly on alternate days up to a maximum of 12 weeks.

In most patients, dose escalation to 30 mg can be accomplished in 3–7 days. However, if acute moderate to severe adverse reactions such as hypotension, rigors, fever, shortness of breath, chills,

bronchospasm (some of which may be due to cytokine release) occur at either the 3 mg or

10 mg dose levels, then those doses should be repeated daily until they are well tolerated before further dose escalation is attempted (see section 4.4).

Median duration of treatment was 11.7 weeks for first-line patients and 9.0 weeks for previously treated patients.

Once a patient meets all laboratory and clinical criteria for a complete response, MabCampath should be discontinued and the patient monitored. If a patient improves (i.e. achieves a partial response or stable disease) and then reaches a plateau without further improvement for 4 weeks or more, then MabCampath should be discontinued and the patient monitored. Therapy should be discontinued if there is evidence of disease progression.

Concomitant medicinal products

Premedications

of action


Patients should be premedicated with oral or intravenous steroids, an appropriate antihistamine and analgesic 30–60 minutes prior to each MabCampath infusion during dose escalation and as clinically indicated thereafter (see section 4.4).

Prophylactic antibiotics

Antibiotics and antivirals should be administered routinely to all patients throughout and followi treatment (see section 4.4).

Dose modification guidelines

There are no dose modifications recommended for severe lymphopenia given the of MabCampath.


In the event of serious infection or severe haematological toxicity MabCa until the event resolves. It is recommended that MabCampath should be i platelet count falls to < 25,000/pl or whose absolute neutrophil coun MabCampath may be reinstituted after the infection or toxicity h permanently discontinued if autoimmune anaemia or autoimmu following table outlines the recommended procedure for do of haematological toxicity while on therapy:

should be interrupted ted in patients whose rops to < 250/pl.

. MabCampath should be cytopenia appears. The


ication following the occurrence



Haematologic values

  • TX              1 • *• * • *

Dose modification

ANC < 250/pJ and/or pla

telet count <25,000/pl

For first occurrence

Withhold MabCampath therapy. Resume MabCampath at 30 mg when AnC > 500/pl and platelet count > 50,000/pl.

For second occurrence

Withhold MabCampath therapy. Resume MabCampath at 10 mg when AnC > 500/pl and platelet count > 50,000/pl.

For third occurrence

Discontinue MabCampath therapy.

> 50% decrease from baseline in patients initiating baseline platelet co

therapy with a baseline ANC < 250/pl and/or a mnt < 25,000/pl

For first occurrence

Withhold MabCampath therapy. Resume MabCampath at 30 mg upon return to baseline value(s). »/>

For second occurrence

Withhold MabCampathEherapv. Resume MabCampath at 10 mg upon return to baseline value(s).

For third occurrence

Discontinue MabCampath therapy.






4.4 Special warnings and precautions for use

Acute adverse reactions, which may occur during initial dose escalation and some of which may be due to the release of cytokines, include hypotension, chills/rigors, fever, shortness of breath and rashes. Additional reactions include nausea, urticaria, vomiting, fatigue, dyspnoea, headache, pruritus, diarrhoea and bronchospasm. The frequency of infusion reactions was highest in the first week of therapy, and declined in the second or third week of treatment, in patients treated with MabCampath both as first line therapy and in previously treated patients.


If these events are moderate to severe, then dosing should continue at the same level prior to each do escalation, with appropriate premedication, until each dose is well tolerated. If therapy is withheld f more than 7 days, MabCampath should be reinstituted with gradual dose escalation.

Transient hypotension has occurred in patients receiving MabCampath. Caution should b treating patients with ischaemic heart disease, angina and/or in patients receiving an antih medicinal product. Myocardial infarction and cardiac arrest have been observed in associ MabCampath infusion in this patient population.

Assessment and ongoing monitoring of cardiac function (e.g. echocardiography, heart rate and body weight) should be considered in patients previously treated with potentially cardiotoxic agents.

It is recommended that patients be premedicated with oral or intrave prior to each MabCampath infusion during dose escalation and as be discontinued as appropriate, once dose escalation has been achie


roids 30 – 60 minutes indicated. Steroids may addition, an oral


antihistamine, e.g. diphenhydramine 50 mg, and an analgesic, eracetamol 500 mg, may be given. In the event that acute infusion reactions persist, the infusion time may be extended up to 8 hours from the time of reconstitution of MabCampath in solution for infusion.



Profound lymphocyte depletion, an expected pharm      ical effect of MabCampath, inevitably

occurs and may be prolonged. CD4 and CD8 T-cell counts begin to rise from weeks 8–12 during treatment and continue to recover for sev nths following the discontinuation of treatment. In patients receiving MabCampath as first apy, the recovery of CD4+ counts to >200 cells/^l occurred by 6 months post-treatment, h r, at 2 months post-treatment the median was 183


cells/pl. In previously treated cells/pl is 2 months following approximate pretreatment leve recommended that anti-infecti



3 times weekly, or other pro oral anti-herpes agent, such


, the median time to reach a level of 200 but may take more than 12 months to to opportunistic infections. It is highly prophylaxis (e.g. trimethoprim/sul­famethoxazole 1 tablet twice daily, axis against Pneumocystis jiroveci pneumonia (PCP) and an effective


and for a mini CD4+ count h


as famciclovir, 250 mg twice daily) should be initiated while on therapy


onths following completion of treatment with MabCampath or until the d to 200 cells/pl or greater, whichever is the later.


The potential for an increased risk of infection-related complications may exist following treatment with multiple chemotherapeutic or biological agents.


cause of the potential for Transfusion Associated Graft Versus Host Disease (TAGVHD) it is ommended that patients who have been treated with MabCampath receive irradiated blood ducts.

Asymptomatic laboratory positive Cytomegalovirus (CMV) viraemia should not necessarily be considered a serious infection requiring interruption of therapy. Ongoing clinical assessment should be performed for symptomatic CMV infection during MabCampath treatment and for at least 2 months following completion of treatment.

Transient grade 3 or 4 neutropenia occurs very commonly by weeks 5–8 following initiation of treatment. Transient grade 3 or 4 thrombocytopenia occurs very commonly during the first 2 weeks of therapy and then begins to improve in most patients. Therefore, haematological monitoring of patients 5

is indicated. If a severe haematological toxicity develops, MabCampath treatment should be interrupted until the event resolves. Treatment may be reinstituted following resolution of the haematological toxicity (see section 4.2). MabCampath should be permanently discontinued if autoimmune anaemia or autoimmune thrombocytopenia appears.


Complete blood counts and platelet counts should be obtained at regular intervals during MabCampath therapy and more frequently in patients who develop cytopenias.


It is not proposed that regular and systematic monitoring of CD52 expression should be carried out as routine clinical practice. However, if retreatment is considered, it may be prudent to confirm the presence of CD52 expression. In data available from first line patients treated with MabCampath, los of CD52 expression was not observed around the time of disease progression or death.



Patients may have allergic or hypersensitivity reactions to MabCampath and to murine o monoclonal antibodies.



Medicinal products for the treatment of hypersensitivity reactions, as well as preparedness to institute emergency measures in the event of reaction during administration is necessary (see section 4.2).


Males and females of childbearing potential should use effective contrac treatment and for 6 months following MabCampath therapy (see sections



No studies have been conducted which specifically address the effect of age on MabCampath disposition and toxicity. In general, older patients (over 65 years of age) tolerate cytotoxic therapy less well than younger individuals. Since CLL occurs commonly in this older age group, these patients should be monitored carefully (see section 4.2). In the studies in first line and previously treated patients no substantial differences in safety and efficacy related to age were observed; however the sizes of the databases are limited.



4.5 Interaction with other medicinal products and other forms of interaction


Although no formal drug interaction stu known clinically significant int MabCampath is a recombinant be expected. However, it is rec other chemotherapeu­tic agents




e been performed with MabCampath, there are no abCampath with other medicinal products. Because otein, a P450 mediated drug-drug interaction would not t MabCampath should not be given within 3 weeks of


Although it has not be in, at least, the 12 anamnestic h


4.6 Fert


d, it is recommended that patients should not receive live viral vaccines wing MabCampath therapy. The ability to generate a primary or nse to any vaccine has not been studied.


gnancy and lactation

abCampath is contraindicated during pregnancy. Human IgG is known to cross the placental barrier; abCampath may cross the placental barrier as well and thus potentially cause foetal B and T cell ymphocyte depletion. Animal reproduction studies have not been conducted with MabCampath. It is ot known if MabCampath can cause foetal harm when administered to a pregnant woman.


Males and females of childbearing capacity should use effective contraceptive measures during treatment and for 6 months following MabCampath therapy (see section 5.3).


Lactation


It is not known whether MabCampath is excreted in human milk. If treatment is needed, breast-feeding should be discontinued during treatment and for at least 4 weeks following MabCampath therapy.


Fertility


There are no definitive studies of MabCampath which assess its impact on fertility. It is not known if MabCampath can affect human reproductive capacity (see section 5.3).


4.7 Effects on ability to drive and use machines



No studies on the effects on the ability to drive and use machines have been performed. However, caution should be exercised as confusion and somnolence have been reported.


4.8 Undesirable effects


The tables below report adverse reactions by MedDRA system organ classes (MedDRA frequencies are based on clinical trial data.

The most appropriate MedDRA term is used to describe a certain reaction and its syn related conditions.


The frequencies are defined as: very common (> 1/10), common (> 1/100 to < 1/10), uncommon (> 1/1,000 to < 1/100), rare (> 1/10,000 to <1/1,000); very rare (<1/10,0 infor­mation is available for events that occur at lower frequency, due to the size of the ion studied; n=147 for first line treated patients and n=149 for previously treated patients.



ns (pyrexia, chills, ias (neutropenia, lymphopenia, infection, other infections),


The most frequent adverse reactions with MabCampath are: in hypotension, urticaria, nausea, rash, tachycardia, dyspnoea), thrombocytopenia, anaemia), infections (CMV viraemia, C gastrointestinal symptoms (nausea, emesis, abdominal pain), and neurological symptoms (insomnia, anxiety). The most frequent serious adverse reactiocytopenias, infusion reactions, and immunosuppres­sion/infection­s.


Undesirable e ffects in first line patients


Safety data in first-line B-CLL patients are based on adverse reactions that occurred on study in 147 patients enrolled in a randomized, controlled study of MabCampath as a single agent administered at a dose of 30 mg intravenously three times weekly for up to 12 weeks, inclusive of dose escalation period. Approximately 97% of first-line patients experienced adverse reactions; the most commonly


reported reactions in first l


Within each freque


nts usually occurred in the first week of therapy.


ping, undesirable effects observed during treatment or within 30 days


following the completion of treatment with MabCampath are presented in order of decreasing seriousness.




System organ class

Very common

Common

Uncommon

Infections and infestations

Cytomegalovirus viraemia Cytomegalovirus infection

Pneumonia Bronchitis Pharyngitis Oral candidiasis

Sepsis

Staphylococcal bacteraemia Tuberculosis Bronchopneumonia Herpes ophthalmicus Beta haemolytic streptococcal infection Candidiasis

Genital candidiasis    J

Urinary tract infection Cystitis

Body tinea "^^ Nasopharyngitis RhinitiZw

Blood and lymphatic system disorder

Febrile neutropenia Neutropenia Leukopenia aX Thrombocvtopeniaj^ Anaemia

Mgranulocytosis lymphopenia ^ymphadenopathy

Epistaxis

Immune system disorders

J ,

Anaphylactic reaction Hypersensitivity

Metabolism and nutrition disorders

Weigh^decreased

p

Tumour lysis syndrome Hyperglycaemia Protein total decreased Anorexia

Psychiatric disorders

^^k

Anxiety

Nervous system disorders

J

XT o6

Syncope Dizziness Tremor Paraesthesia Hypoesthesia Headache

Vertigo

Eye disorders

%

Conjunctivitis

Cardiac disorders A

’0^

Cyanosis Bradycardia Tachycardia Sinus tachycardia

Cardiac arrest Myocardial infarction Angina pectoris Atrial fibrillation Arrhythmia supraventricular Sinus bradycardia Supraventricular extrasystoles

Vascular disorders

Hypotension

Hypertension

Orthostatic hypotension

Hot flush

Flushing

Respiratory, thoracic and mediastinal disorders

Bronchospasm

Dyspnoea

Hypoxia

Pleural effusion

Dysphonia

Rhinorrhoea

System organ class

Very common

Common

Uncommon

Gastrointestinal disorders

Nausea

Vomiting

Abdominal pain

Ileus

Oral discomfort

Stomach discomfort

Diarrhoea

Skin and subcutaneous tissue disorders

Urticaria

Rash

Dermatitis allergic Pruritus Hyperhidrosis Erythema

Rash pruritic

Rash macular

Rash erythematous

Dermatitis             A

Musculoskeletal and connective tissue disorders

Myalgia

Musculoskeletal pain

Back pain

Bone pain Arthralgia Musculoskeletal chest pain

Muscle spasms

Renal and urinary disorders

UrineoutPutde­creased

Dysuria

General disorders and administration site conditions

Fever

Chills

Fatigue

Asthenia

MucosOrfnflammation Infusion site erythema Localised oedema infusion site oedema

Malaise

Acute infusion reactions including fever, chills, nausea, vomiting, hypotension, fatigue, rash, urticaria, dyspnoea, headache, pruritus and diarrhoea have been reported. The majority of these reactions are mild to moderate in severity. Acute infusion reactions usually occur during the first week of therapy and substantially decline thereafter. Grade 3 or 4 infusion reactions are uncommon after the first week of therapy.

Undesirable effects in previously treated patients

Safety data in previously treated B-CLL patients are based on 149 patients enrolled in single-arm studies of MabCampath (Studies 1, 2, and 3). More than 80% of previously treated patients may be expected to experience adverse reactions; the most commonly reported reactions usually occur during the first week of therapy.

Within each frequency grouping, undesirable effects are presented in order of decreasing seriousness.

System organ class

Very common

Common

Uncommon

Infections and infestations

Sepsis Pneumonia Herpes simplex

Cytomegalovirus infection

Pneumocystis jiroveci infection

Pneumonitis

Fungal infection Candidiasis

Herpes zoster Abscess

Urinary tract infection Sinusitis

Bronchitis

Upper respiratory tract infection

Pharyngitis Infection

Bacterial infection

Viral infection Fungal dermatitis Laryngitis Rhinitis Onychomycosis

Neoplasms, benign, malignant and unspecified (incl. cysts and polyps)

Lymphoma – like disorder

Blood and lymphatic system disorder

Granulocytopenia Thrombocytopenia Anaemia

Febrile neutropenia Pancytopeni a.    

Leukopenia

Lymphopenia

^urp ura^

Aplasia bone marrow Disseminated intravascular coagulation Haemolytic anaemia, Decreased haptoglobin Bone marrow depression Epistaxis Gingival bleeding Haematology test abnormal

Immune system disorders

Allergic reaction

Severe anaphylactic and other hypersensitivity reactions

Metabolism and nutrition disorders

Anorexia

Hyponatraemia Hypocalcaemia Weight decrease Dehydration Thirst

Hypokalaemia Diabetes mellitus aggravated

Psychiatric disorders

Confusion Anxiety Depression Somnolence Insomnia

Depersonalisation Personality disorder Abnormal thinking Impotence Nervousness

Nervous system disorders

Headache

Vertigo Dizziness Tremor Paresthesia Hypoesthesia Hyperkinesia Taste loss

Syncope Abnormal gait Dystonia Hyperesthesia Neuropathy Taste perversion

Eye disorders

Conjunctivitis

Endophthalmitis

Ear and labyrinth disorders

Deafness           4

Tinnitus             

Cardiac disorders

Palpitation

Tachycardia

Cardiac arrest Myocardial infarction Atrial fibrillation Supraventricular tachycardia Arrhythmia Bradycardia

-Abnormal ECG

Vascular disorders

Hypotension

Hypertension Vasospasm Flushing

peripheral ischaemia

Respiratory, thoracic and mediastinal disorders

Dyspnoea

Hypoxia Haemoptysis^ Bronchospasm Coughing p

Stridor

Throat tightness Pulmonary infiltration Pleural effusion Breath sounds decreased Respiratory disorder

Gastrointestinal disorders

Vomiting

Nausea

Diarrhoea I t

0^

Gastrointestinal haemorrhage Ulcerative stomatitis Stomatitis Abdominal pain Dyspepsia Constipation Flatulence

Gastroenteritis Tongue ulceration Gingivitis Hiccup Eructation Dry mouth

Hepatobiliary disorders

Hepatic function abnormal

Skin and subcutaneous tissue disorders

Pruritus

Urticaria Rash Hyperhidrosis

Bullous eruption

Erythematous rash

Maculo-papular rash Skin disorder

_

Musculoskeletal and connective tissue disorders

Arthralgia Myalgia Skeletal pain Back pain

Leg pain Hypertonia

Renal and urinary disorders

Haematuria

Urinary incontinence Urine flow decreased

Polyuria

Renal function abnormal

General disorders and administration site conditions

Chills

Fever Fatigue

Chest pain Influenza-like symptoms Mucositis Oedema mouth Oedema Asthenia Malaise Temperature change sensation

Infusion site reaction Pain


Pulmonary oedema Peripheral oedema Periorbital oedema Mucosal ulceration Infusion site bruising Infusion site dermatitis Infusion site pain


Undesirable effects observed during post-marketing surveillance


Infusion reactions: Serious and sometimes fatal reactions, including bronchospasm, h pulmonary infiltrates, acute respiratory distress syndrome (ARDS), respiratory arr infarction, arrhythmias, acute cardiac insufficiency and cardiac arrest have been o


anaphylactic and other hypersensitivity reactions, including anaphylactic sh been reported following MabCampath administration. These symptoms can if premedication and dose escalation are utilised (see section 4.4).


eliorated or avoided


yncope, ardial

d. Severe gioedema, have


Infections and infestations: Serious and sometimes fatal viral (e. B, progressive multifocal leukoencephalopathy (PML)), bacteri


mycobacterioses, nocardiosis), protozoan (e.g. toxoplasma mucormycosis) infections, including those due to reactivati post-marketing surveillance. The recommended anti-infecti



irus, parainfluenza, hepatitis g tuberculosis and atypical d fungal (e.g. rhinocerebral


effective in reducing the risk of PCP and herpes infections (see section 4.4).


of latent infections have occurred during prophylaxis treatment appears to be


EBV-associated lymphoproliferative disorders, in some cases fatal, have been reported.


Blood and lymphatic system disorders:


reactions have been reported.


Immune system disorders: Serious and sometimes fatal autoimmune phenomena including autoimmune haemolytic anaemia, autoimmune thrombocytopenia, aplastic anaemia, Guillain Barré syndrome and its chronic form, chronic inflammatory demyelinating polyradiculone­uropathy have been reported. A positive Coombs test has also been observed. Fatal Transfusion Associated Graft Versus Host Disease GVHD) has also been reported.


Metabolism



al disorders: Tumour lysis syndrome with fatal outcome has been reported.


Nervous sy thrombocyt


¡orders: Intracranial haemorrhage has occurred with fatal outcome, in patients with


Overdose

disorders: Congestive heart failure, cardiomyopathy, and decreased ejection fraction have orted in patients previously treated with potentially cardiotoxic agents.


Patients have received repeated unit doses of up to 240 mg of MabCampath. The frequency of grade 3 or 4 adverse events, such as fever, hypotension and anaemia, may be higher in these patients. There is no known specific antidote for MabCampath. Treatment consists of discontinuation of MabCampath and supportive therapy.


5. PHARMACOLOGICAL PROPERTIES5.1 Pharmacodynamic properties

Pharmacotherapeutic group: Antineoplastic agents, monoclonal antibodies, ATC code: L01XC04.


Alemtuzumab is a genetically engineered humanised IgG1 kappa monoclonal antibody specific for a 21–28 kD lymphocyte cell surface glycoprotein (CD52) expressed primarily on the surface of normal and malignant peripheral blood B and T cell lymphocytes. Alemtuzumab was generated by the insertion of six complementarity-determining regions from an IgG2a rat monoclonal antibody into a human IgG1 immunoglobulin molecule.

Alemtuzumab causes the lysis of lymphocytes by binding to CD52, a highly expressed, nonmodulating antigen which is present on the surface of essentially all B and T cell lymphoc as monocytes, thymocytes and macrophages. The antibody mediates the lysis of lymphoc complement fixation and antibody-dependent cell mediated cytotoxicity. The antigen on a small percentage (< 5%) of granulocytes, but not on erythrocytes or platelets. Alemtuzumab does not appear to damage haematopoietic stem cells or progenitor cells.

First line B-CLL patients

The safety and efficacy of MabCampath were evaluated in a Phase 3, comparative trial of first line (previously untreated) Rai stage I-IV B (Study 4). MabCampath was shown to be superior to chlorambucil endpoint progression free survival (PFS) (see Figure 1).


75

50

Estimated Probability 100

Figure 1: Progression free survival in first line study (by treatment group)

Stratified log-rank test: p=0 0001

32

'd Ratio: 0.58

2I: 0.43, 0.77

28

83

122

110

4

5

th V lorambucil 148


20

fime (Months)

62      49      31

40      25      17


el, randomized tients requiring therapy ured by the primary


36    40


The secondary objectives included complete response (CR) and overall response (CR or partial response) rates using the 1996 NCIWG criteria, the duration of response, time to alternative treatment and safety of the two treatment arms.

Summary of first-line patient population and outcomes

Independent review of response rate and duration

MabCampath n=149

Chlorambucil n=148

P value

Median Age (Years)

59

60

Not Applicable

Rai Stage III/IV Disease

33.6%

33.1%

Not Applicable

Overall Response Rate

83.2%

55.4%

<0.0001*

Complete Response

24.2%

2.0%

<0.0001*

MRD negative****

7.4%

0.0%

0.0008*^

Partial Response

59.1%

53.4%

Not Applicable

Duration of Response, CR or PR (Months)

K-M median (95% Confidence

Interval)

N=124 16.2 (11.5, 23.0)

N=82

12.7 (10.2, 14.3)

Not Applicable

Time to Alternative Treatment (Months)

K-M median (95% Confidence

Interval)

23.3 (20.7, 31.0)

14.7 5 (12.6, 16.8)

__

0.0001

*Pearson chi-square test or Exact test

Duration of best response

log-rank test stratified by Rai group (Stage I-II vs III-IV)

**** by 4-colour flow

Cytogenetic analyses in first line B-CLL patients:

The cytogenetic profile of B-CLL has been increasingly recognized as providing important prognostic information and may predict response to certain therapies. Of the first-line patients (n=282) in whom baseline cytogenetic (FISH) data were available in Study 4, chromosomal aberrations were detected in 82%, while normal karyotype was detected in 18%. Chromosomal aberrations were categorized according to Dohner’s hierar­chical model. In first line patients, treated with either MabCampath or chlorambucil, there were 21 patients with the 17p deletion, 54 patients with 11q deletion, 34 patients with trisomy 12, 51 patients with normal karyotype and 67 patients with sole 13q deletion.

ORR was superior in patients with any 11q deletion (87% v 29%; p<0.0001) or sole deletion 13q (91% v 62%; p=0.0087) treated with MabCampath compared to chlorambucil. A trend toward improved ORR was observed in patients with 17p deletion treated with MabCampath (64% v 20%; p=0.0805). Complete remissions were also superior in patients with sole 13q deletion treated with MabCampath (27% v 0%; p=0.0009). Median PFS was superior in patients with sole 13q deletion treated with MabCampath (24.4 v 13.0 mon­ths; p=0.0170 stratified by Rai Stage). A trend towards improved PFS was observed in patients with 17p deletion, trisomy 12 and normal karyotype, which did not reach significance due to small sample size.

Assessment of CMV by PCR:

In the randomized controlled trial in first line patients (Study 4), patients in the MabCampath arm were tested weekly for CMV using a PCR (polymerase chain reaction) assay from initiation through completion of therapy, and every 2 weeks for the first 2 months following therapy. In this study, asymptomatic positive PCR only for CMV was reported in 77/147 (52.4%) of MabCampath-treated patients; symptomatic CMV infection was reported less commonly in 23/147 MabCampath treated patients (16%). In the MabCampath arm 36/77 (46.8%) of patients with asymptomatic PCR positive CMV received antiviral therapy and 47/77 (61%) of these patients had MabCampath therapy interrupted. The presence of asymptomatic positive PCR for CMV or symptomatic PCR positive

CMV infection during treatment with MabCampath had no measurable impact on progression free survival (PFS).


Previously treated B-CLL patients:


Determination of the efficacy of MabCampath is based on overall response and survival rates. Data available from three uncontrolled B-CLL studies are summarised in the following table:


Efficacy parameters

Study 1

Study 2

Study 3

Number of Patients

93

32

24

Diagnostic Group

B-CLL pts who had received an alkylating agent and had failed fludarabine

B-CLL pts who had failed to respond or relapsed following treatment with conventional chemotherapy

B-CLL (plus a PLL) pts who had failed to respondo^reJa psed following treatment with fludarabine

Median Age (years)

66

57 /O

62

Disease Characteristics (%) Rai Stage III/IV B Symptoms

76

42

72 >

31 X

>■       7,

21

Prior Therapies (%): Alkylating Agents Fludarabine

100

100

„dr

92

100

Number of Prior Regimens (range)

3 (2–7)

X 3 (1–10)

3 (1–8)

Initial Dosing Regimen

Gradual escalation / from 3 to 10 to 30 mg

Gradual escalation from 10 to 30 mg

Gradual escalation from 10 to 30 mg

Final Dosing Regimen

30 mg iv 3 x weekly '

k 30 mg iv 3 x weekly

30 mg iv 3 x weekly

Overall Response Rate (%) (95% Confidence Interval) Complete Response Partial Response

„3243)5

W 3r

21 (8–33) 0

21

29 (11–47) 0

29

Median Duration of Response (months) (95% Confidence Interval)

xO (5–8)

7 (5–23)

11 (6–19)

Median time to Response (months) (95% Confidence Interval)

(122)

4 (1–5)

4 (2–4)

Progression-Free Survival (months) (95% Confidence Interval) > J

4 (3–5)

5 (3–7)

7 (3–9)

Survival (months):              "

(95% Confidence Interval)

All patients

Responders

16 (12–22)

33 (26-NR)

26 (12–44)

44 (28-NR)

28 (7–33)

36 (19-NR)

= not reache



5.2


acokinetic properties

acokinetics were characterised in MabCampath-naive patients with B-cell chronic lymphocytic mia (B-CLL) who had failed previous therapy with purine analogues. MabCampath was istered as a 2 hour intravenous infusion, at the recommended dosing schedule, starting at 3 mg

increasing to 30 mg, 3 times weekly, for up to 12 weeks. MabCampath pharmacokinetics followed


a 2-compartment model and displayed non-linear elimination kinetics. After the last 30 mg dose, the median volume of distribution at steady-state was 0.15 l/kg (range: 0.1–0.4 l/kg), indicating that distribution was primarily to the extracellular fluid and plasma compartments. Systemic clearance decreased with repeated administration due to decreased receptor-mediated clearance (i.e. loss of CD52 receptors in the periphery). With repeated administration and consequent plasma concentration accumulation, the rate of elimination approached zero-order kinetics. As such, half-life was 8 hours (range: 2–32 hours) after the first 30 mg dose and was 6 days (range: 1–14 days) after the last 30 mg


dose. Steady-state concentrations were reached after about 6 weeks of dosing. No apparent difference in pharmacokinetics between males and females was observed nor was any apparent age effect observed.

5.3 Preclinical safety data

Preclinical evaluation of alemtuzumab in animals has been limited to the cynomolgus monkey because of the lack of expression of the CD52 antigen on non-primate species.

Lymphocytopenia was the most common treatment-related effect in this species. A slight cumulative effect on the degree of lymphocyte depletion was seen in repeated dose studies compared to single dose studies. Lymphocyte depletion was rapidly reversible after cessation of dosing. Reversible neutropenia was seen following daily intravenous or subcutaneous dosing for 30 days, but not following single doses or daily dosing for 14 days. Histopathology results from bone marrow samples revealed no remarkable changes attributable to treatment. Single intravenous doses of 10 and 30 mg/kg produced moderate to severe dose related hypotension accompanied by a slight tachycardia.

MabCampath Fab binding was observed in lymphoid tissues and the mononuclear phagocyte system. Significant Fab binding was also observed in the male reproductive tract (epididymis, sperm, seminal vesicle) and the skin.

No other findings, in the above toxicity studies, provide information of significant relevance to clinical use.

No short or long term animal studies have been conducted and mutagenic potential.

Campath to assess carcinogenic


6. PHARMACEUTICAL PARTICULAR

6.1 List of excipients

Disodium edetate

Polysorbate 80

Potassium chloride

Potassium dihydrogen phosphate

Sodium chloride

Dibasic sodium phosphate

Water for injections

This medicinal product must not be mixed with other medicinal products except those mentioned in section 6.6.

There are no known incompatibilities with other medicinal products. However, other medicinal products should not be added to the MabCampath infusion or simultaneously infused through the same intravenous line.

6.3 Shelf life

Unopen ampoule: 3 years.

Reconstituted solution: MabCampath contains no antimicrobial preservative. MabCampath should be used within 8 hours after dilution. Solutions may be stored at 15°C-30°C or refrigerated. This can only be accepted if preparation of the solution takes place under strictly aseptic conditions and the solution is protected from light.

6.4 Special precautions for storage


Store in a refrigerator (2°C-8°C).

Do not freeze.

Store in the original package in order to protect from light.


For storage conditions of the reconstituted medicinal product, see section 6.3.


6.5 Nature and contents of container


Clear Type I glass ampoule, containing 3 ml of concentrate. Pack size: carton of 3 ampoules.


6.6 Special precautions for disposal and other handling


The ampoule contents should be inspected for particulate matter and discolouratio administration. If particulate matter is present or the concentrate is coloured, then the ampoule should not be used.



MabCampath contains no antimicrobial preservatives, therefore, it is rec should be prepared for intravenous infusion using aseptic techniques and infusion should be administered within 8 hours after preparation



required amount of the ampoule contents should be added, via 5 ^m filter, to 100 ml of sodium chloride 9 mg/ml (0.9%) so solution for infusion. The bag should be inverted gently ensure the sterility of the prepared solution particularly as i




ed that MabCampath diluted solution for ted from light. The -protein binding, non-fibre


r infusion or glucose (5%) solution. Care should be taken to ntains no antimicrobial preservatives.


Other medicinal products should not be added to infused through the same intravenous line (see section 4.5).


infusion solution or simultaneously



Caution should be exercised in the handli latex gloves and safety glasses is rec or other accidental spillage. W MabCampath.


preparation of the MabCampath solution. The use of ended to avoid exposure in case of breakage of the ampoule are pregnant or trying to become pregnant should not handle


Procedures for proper handling isposal should be observed. Any spillage or waste material should be disposed of by incineration.


7. MAR

Genzy Gooi

aarden

V

EU/1/01/193/001


UTHORISATION HOLDER

MARKETING AUTHORISATION NUMBER(S)

9. DATE OF FIRST AUTHORISATION/RENEWAL OF THE AUTHORISATION


Date of first authorisation: 06/07/2001

Date of latest renewal: 10/07/2011


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