| Clinical trial experience In patients treated with TMZ, whether used in combination with RT or as monotherapy following RT for newly-diagnosed glioblastoma multiforme, or as monotherapy in patients with recurrent or progressive glioma, the reported very common adverse reactions were similar: nausea, vomiting, constipation, anorexia, headache and fatigue. Convulsions were reported very commonly in the newly-diagnosed glioblastoma multiforme patients receiving monotherapy, and rash was reported very commonly in newly-diagnosed glioblastoma multiforme patients receiving TMZ concurrent with RT and also as monotherapy, and commonly in recurrent glioma. Most haematologic adverse reactions, were reported commonly or very commonly in both indications (Tables 4 and 5): the frequency of grade 3-4 laboratory findings is presented after each table.In the tables undesirable effects are classified according to System Organ Class and frequency. Frequency groupings are defined according to the following convention: Very common ( 1/10); Common ( 1/100 to < 1/10); Uncommon ( 1/1,000 to < 1/100). Within each frequency grouping, undesirable effects are presented in order of decreasing seriousness.Newly-diagnosed glioblastoma multiforme Table 4 provides treatment-emergent adverse events in patients with newly-diagnosed glioblastoma multiforme during the concomitant and monotherapy phases of treatment.| Table 4. Treatment-emergent events during concomitant and monotherapy treatment phases in patients with newly-diagnosed glioblastoma multiforme | | System Organ Class
| TMZ + concomitant RT n=288*
| TMZ monotherapy n=224
| | Infections and infestations
| | Common: | Infection, Herpes simplex, wound infection, pharyngitis, candidiasis oral
| Infection, candidiasis oral
| | Uncommon: | | Herpes simplex, herpes zoster, influenzalike symptoms
| | Blood and lymphatic system disorders
| | Common:
| Neutropenia, thrombocytopenia, lymphopenia, leukopenia
| Febril neutropenia, thrombocytopenia, anaemia, leukopenia
| | Uncommon: | Febrile neutropenia, anaemia
| Lymphopenia, petechiae
| | Endocrine disorders
| | Uncommon:
| Cushingoid
| Cushingoid
| | Metabolism and nutrition disorders
| | Very common:
| Anorexia
| Anorexia
| | Common: | Hyperglycaemia, weight decreased
| Weight decreased
| | Uncommon:
| Hypokalemia, alkaline phosphatase increased, weight increased
| Hyperglycaemia, weight increased
| | Psychiatric disorders
| | Common: | Anxiety, emotional lability, insomnia
| Anxiety, depression, emotional lability, insomnia
| | Uncommon: | Agitation, apathy, behaviour disorder, depression, hallucination
| Hallucination, amnesia
| | Nervous system disorders
| | Very common: | Headache
| Convulsions, headache
| | Common: | Convulsions, consciousness decreased, somnolence, aphasia, balance impaired, dizziness, confusion, memory impairment, concentration impaired, neuropathy, paresthesia, speech disorder, tremor
| Hemiparesis, aphasia, balance impaired, somnolence, confusion, dizziness, memory impairment, concentration impaired, dysphasia, neurological disorder (NOS), neuropathy, peripheral neuropathy, paresthesia, speech disorder, tremor
| | Uncommon:
| Status epilepticus, extrapyramidal disorder, hemiparesis, ataxia, cognition impaired, dysphasia, gait abnormal, hyperesthesia, hypoesthesia, neurological disorder (NOS), peripheral neuropathy
| Hemiplegia, ataxia, coordination abnormal, gait abnormal, hyperesthesia, sensory disturbance
| | Eye disorders
| | Common:
| Vision blurred
| Visual field defect, vision blurred, diplopia
| | Uncommon: | Hemianopia, visual acuity reduced, vision disorder, visual field defect, eye pain
| Visual acuity reduced, eye pain, eyes dry
| | Ear and labyrinth disorders
| | Common:
| Hearing impairment
| Hearing impairment, tinnitus
| | Uncommon: | Otitis media, tinnitus, hyperacusis, earache
| Deafness, vertigo, earache
| | Cardiac disorders
| | Uncommon:
| Palpitation
| | | Vascular disorders
| | Common:
| Haemorrhage, oedema, oedema leg
| Haemorrhage, deep venous thrombosis, oedema leg
| | Uncommon: | Cerebral haemorrhage, hypertension
| Embolism pulmonary, oedema, oedema peripheral
| | Respiratory, thoracic and mediastinal disorders
| | Common: | Dyspnoea, coughing
| Dyspnoea, coughing
| | Uncommon:
| Pneumonia, upper respiratory infection, nasal congestion
| Pneumonia, sinusitis, upper respiratory infection, bronchitis
| | Gastrointestinal disorders
| | Very common: | Constipation, nausea, vomiting
| Constipation, nausea, vomiting
| | Common: | Stomatitis, diarrhoea, abdominal pain, dyspepsia, dysphagia
| Stomatitis, diarrhoea, dyspepsia, dysphagia, mouth dry
| | Uncommon:
| | Abdominal distension, fecal incontinence, gastrointestinal disorder (NOS), gastroenteritis, haemorrhoids
| | Skin and subcutaneous tissue disorders
| | Very common: | Rash, alopecia
| Rash, alopecia
| | Common: | Dermatitis, dry skin, erythema, pruritus
| Dry skin, pruritus
| | Uncommon:
| Skin exfoliation, photosensitivity reaction, pigmentation abnormal
| Erythema, pigmentation abnormal, sweating increased
| | Musculoskeletal and connective tissue disorders
| | Common: | Muscle weakness, arthralgia
| Muscle weakness, arthralgia, musculoskeletal pain, myalgia
| | Uncommon: | Myopathy, back pain, musculoskeletal pain, myalgia
| Myopathy, back pain
| | Renal and urinary disorders
| | Common: | Micturition frequency, urinary incontinence
| Urinary incontinence
| | Uncommon: | | Dysuria
| | Reproductive system and breast disorders
| | Uncommon: | Impotence
| Vaginal haemorrhage, menorrhagia, amenorrhea, vaginitis, breast pain
| | General disorders and administration site conditions
| | Very common: | Fatigue
| Fatigue
| | Common: | Allergic reaction, fever, radiation injury, face oedema, pain, taste perversion
| Allergic reaction, fever, radiation injury, pain, taste perversion
| | Uncommon:
| Asthenia, flushing, hot flushes, condition aggravated, rigors, tongue discolouration, parosmia, thirst
| Asthenia, face oedema, pain, condition aggravated, rigors, tooth disorder, taste perversion
| | Investigations
| | Common: | ALT increased
| ALT increased
| | Uncommon: | Hepatic enzymes increased, Gamma GT increased, AST increased
| | *A patient who was randomised to the RT arm only, received TMZ + RT.Laboratory results Myelosuppression (neutropenia and thrombocytopenia), which is known dose-limiting toxicity for most cytotoxic agents, including TMZ, was observed. When laboratory abnormalities and adverse events were combined across concomitant and monotherapy treatment phases, Grade 3 or Grade 4 neutrophil abnormalities including neutropenic events were observed in 8 % of the patients. Grade 3 or Grade 4 thrombocyte abnormalities, including thrombocytopenic events were observed in 14 % of the patients who received TMZ. Recurrent or progressive malignant glioma In clinical trials, the most frequently occurring treatment-related undesirable effects were gastrointestinal disorders, specifically nausea (43 %) and vomiting (36 %). These reactions were usually Grade 1 or 2 (0 5 episodes of vomiting in 24 hours) and were either self-limiting or readily controlled with standard anti-emetic therapy. The incidence of severe nausea and vomiting was 4 %. Table 5 includes adverse reactions reported during clinical trials for recurrent or progressive malignant glioma and following the marketing of Temodal.| Table 5. Adverse reactions in patients with recurrent or progressive malignant glioma | | Infections and infestations
| | Rare: | Opportunistic infections, including PCP
| | Blood and lymphatic system disorders
| | Very common:
| Neutropenia or lymphopenia (grade 3-4), thrombocytopenia (grade 3-4)
| | Uncommon:
| Pancytopenia, anaemia (grade 3-4), leukopenia
| | Metabolism and nutrition disorders
| | Very common:
| Anorexia
| | Common:
| Weight decrease
| | Nervous system disorders
| | Very common:
| Headache
| | Common:
| Somnolence, dizziness, paresthesia
| | Respiratory, thoracic and mediastinal disorders
| | Common:
| Dyspnoea
| | Gastrointestinal disorders
| | Very common:
| Vomiting, nausea, constipation
| | Common:
| Diarrhoea, abdominal pain, dyspepsia
| | Skin and subcutaneous tissue disorders
| | Common:
| Rash, pruritus, alopecia
| | Very rare:
| Erythema multiforme, erythroderma, urticaria, exanthema
| | General disorders and administration site conditions
| | Very common:
| Fatigue
| | Common:
| Fever, asthenia, rigors, malaise, pain, taste perversion
| | Very rare:
| Allergic reactions, including anaphylaxis, angioedema
|
Laboratory results Grade 3 or 4 thrombocytopenia and neutropenia occurred in 19 % and 17 % respectively, of patients treated for malignant glioma. This led to hospitalisation and/or discontinuation of TMZ in 8 % and 4 %, respectively. Myelosuppression was predictable (usually within the first few cycles, with the nadir between Day 21 and Day 28), and recovery was rapid, usually within 1-2 weeks. No evidence of cumulative myelosuppression was observed. The presence of thrombocytopenia may increase the risk of bleeding, and the presence of neutropenia or leukopenia may increase the risk of infection.Gender In a population pharmacokinetics analysis of clinical trial experience there were 101 female and 169 male subjects for whom nadir neutrophil counts were available and 110 female and 174 male subjects for whom nadir platelet counts were available. There were higher rates of Grade 4 neutropenia (ANC < 0.5 x 109/l), 12 % vs 5 %, and thrombocytopenia (< 20 x 109/l), 9 % vs 3 %, in women vs. men in the first cycle of therapy. In a 400 subject recurrent glioma data set, Grade 4 neutropenia occurred in 8 % of female vs 4 % of male subjects and Grade 4 thrombocytopenia in 8 % of female vs 3 % of male subjects in the first cycle of therapy. In a study of 288 subjects with newly-diagnosed glioblastoma multiforme, Grade 4 neutropenia occurred in 3 % of female vs 0 % of male subjects and Grade 4 thrombocytopenia in 1 % of female vs 0 % of male subjects in the first cycle of therapy.Post -Marketing Experience Antineoplastic agents, and notably alkylating agents, have been associated with a potential risk of myelodysplastic syndrome (MDS) and secondary malignancies, including leukaemia. Very rare cases of MDS and secondary malignancies, including myeloid leukaemia have been reported in patients treated with regimens that included TMZ. Prolonged pancytopenia, which may result in aplastic anaemia has been reported very rarely.Cases of toxic epidermal necrolysis and Stevens-Johnson syndrome have been reported very rarely.Cases of interstitial pneumonitis/pneumonitis have been reported very rarely.There have been reported cases of hepatotoxicity including elevations of liver enzymes, hyperbilirubinemia, cholestasis and hepatitis. | |