ADVERSE REACTIONS

The following clinically significant adverse reactions are described in detail in other sections of the prescribing information:

⸰ Embryo-Fetal Toxicity [see Boxed Warning, Warnings and Precautions (5.1, 5.2)]

⸰ Hematologic Toxicity [see Boxed Warning, Warnings and Precautions (5.3)]

⸰ Venous and Arterial Thromboembolism [see Boxed Warning, Warnings and Precautions (5.4)]

⸰ Increased Mortality in Patients with CLL [see Warnings and Precautions (5.5)]

⸰ Second Primary Malignancies [see Warnings and Precautions (5.6)]

⸰ Increased Mortality in Patients with MM When Pembrolizumab Is Added to a Thalidomide Analogue and Dexamethasone [see Warnings and Precautions (5.7)]

⸰ Hepatotoxicity [see Warnings and Precautions (5.8)]

⸰ Severe Cutaneous Reactions [see Warnings and Precautions (5.9)]

⸰ Tumor Lysis Syndrome [see Warnings and Precautions (5.10)]

⸰ Tumor Flare Reactions [see Warnings and Precautions (5.11)]

⸰ Impaired Stem Cell Mobilization [see Warnings and Precautions (5.12)]

⸰ Thyroid Disorders [see Warnings and Precautions (5.13)]

⸰ Hypersensitivity [see Warnings and Precautions (5.15)]

Clinical Trials Experience

Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice.

Newly Diagnosed MM – Lenalidomide Combination Therapy:

Data were evaluated from 1613 patients in a large phase 3 study who received at least one dose of lenalidomide with low dose dexamethasone (Rd) given for 2 different durations of time (i.e., until progressive disease [Arm Rd Continuous; N=532] or for up to eighteen 28-day cycles [72 weeks, Arm Rd18; N=540] or who received melphalan, prednisone and thalidomide (Arm MPT; N=541) for a maximum of twelve 42-day cycles (72 weeks). The median treatment duration in the Rd Continuous arm was 80.2 weeks (range 0.7 to 246.7) or 18.4 months (range 0.16 to 56.7).

In general, the most frequently reported adverse reactions were comparable in Arm Rd Continuous and Arm Rd18, and included diarrhea, anemia, constipation, peripheral edema, neutropenia, fatigue, back pain, nausea, asthenia, and insomnia. The most frequently reported Grade 3 or 4 reactions included neutropenia, anemia, thrombocytopenia, pneumonia, asthenia, fatigue, back pain, hypokalemia, rash, cataract, lymphopenia, dyspnea, DVT, hyperglycemia, and leukopenia. The highest frequency of infections occurred in Arm Rd Continuous (75%) compared to Arm MPT (56%). There were more grade 3 and 4 and serious adverse reactions of infection in Arm Rd Continuous than either Arm MPT or Rd18.

In the Rd Continuous arm, the most common adverse reactions leading to dose interruption of lenalidomide were infection events (28.8%); overall, the median time to the first dose interruption of lenalidomide was 7 weeks. The most common adverse reactions leading to dose reduction of lenalidomide in the Rd Continuous arm were hematologic events (10.7%); overall, the median time to the first dose reduction of lenalidomide was 16 weeks. In the Rd Continuous arm, the most common adverse reactions leading to discontinuation of lenalidomide were infection events (3.4%).

In both Rd arms, the frequencies of onset of adverse reactions were generally highest in the first 6 months of treatment and then the frequencies decreased over time or remained stable throughout treatment, except for cataracts. The frequency of onset of cataracts increased over time with 0.7% during the first 6 months and up to 9.6% by the 2nd year of treatment with Rd Continuous.

Table 4 summarizes the adverse reactions reported for the Rd Continuous, Rd18, and MPT treatment arms.

Table 4: All Adverse Reactions in ≥5% and Grade 3/4 Adverse Reactions in ≥1% of Patients with MM in the Rd Continuous or Rd18 Arms•

Body System Adverse Reaction	All Adverse Reactions ^a	Grade 3/4 Adverse Reactions ^b
Rd Continuous (N = 532)	Rd18 (N = 540)	MPT (N = 541)	Rd Continuous (N = 532)	Rd18 (N = 540)	MPT (N = 541)
General disorders and administration site conditions
Fatigue ^%	173 (33)	177 (33)	154 (28)	39 (7)	46 (9)	31 (6)
Asthenia	150 (28)	123 (23)	124 (23)	41 (8)	33 (6)	32 (6)
Pyrexia ^c	114 (21)	102 (19)	76 (14)	13 (2)	7 (1)	7 (1)
Non-cardiac chest pain ^f	29 (5)	31 (6)	18 (3)	< 1%	< 1%	< 1%
Gastrointestinal disorders
Diarrhea	242 (45)	208 (39)	89 (16)	21 (4)	18 (3)	8 (1)
Abdominal pain ^%f	109 (20)	78 (14)	60 (11)	7 (1)	9 (2)	< 1%
Dyspepsia ^f	57 (11)	28 (5)	36 (7)	< 1%	< 1%	0 (0)
Musculoskeletal and connective tissue disorders
Back pain ^c	170 (32)	145 (27)	116 (21)	37 (7)	34 (6)	28 (5)
Muscle spasms ^f	109 (20)	102 (19)	61 (11)	< 1%	< 1%	< 1%
Arthralgia ^f	101 (19)	71 (13)	66 (12)	9 (2)	8 (1)	8 (1)
Bone pain ^f	87 (16)	77 (14)	62 (11)	16 (3)	15 (3)	14 (3)
Pain in extremity ^f	79 (15)	66 (12)	61 (11)	8 (2)	8 (1)	7 (1)
Musculoskeletal pain ^f	67 (13)	59 (11)	36 (7)	< 1%	< 1%	< 1%
Musculoskeletal chest pain ^f	60 (11)	51 (9)	39 (7)	6 (1)	< 1%	< 1%
Muscular weakness ^f	43 (8)	35 (6)	29 (5)	< 1%	8 (1)	< 1%
Neck pain ^f	40 (8)	19 (4)	10 (2)	< 1%	< 1%	< 1%
Infections and infestations
Bronchitis ^c	90 (17)	59 (11)	43 (8)	9 (2)	6 (1)	< 1%
Nasopharyngitis ^f	80 (15)	54 (10)	33 (6)	0 (0)	0 (0)	0 (0)
Urinary tract infection ^f	76 (14)	63 (12)	41 (8)	8 (2)	8 (1)	< 1%
Upper respiratory tract infection ^{c% f}	69 (13)	53 (10)	31 (6)	< 1%	8 (1)	< 1%
Pneumonia ^c@	93 (17)	87 (16)	56 (10)	60 (11)	57 (11)	41 (8)
Respiratory tract infection ^%	35 (7)	25 (5)	21 (4)	7 (1)	< 1%	< 1%
Influenza ^f	33 (6)	23 (4)	15 (3)	< 1%	< 1%	0 (0)
Gastroenteritis ^f	32 (6)	17 (3)	13 (2)	0 (0)	< 1%	< 1%
Lower respiratory tract infection	29 (5)	14 (3)	16 (3)	10 (2)	< 1%	< 1%
Rhinitis ^f	29 (5)	24 (4)	14 (3)	0 (0)	0 (0)	0 (0)
Cellulitis ^c	< 5%	< 5%	< 5%	8 (2)	< 1%	< 1%
Sepsis ^c@	33 (6)	26 (5)	18 (3)	26 (5)	20 (4)	13 (2)
Nervous system disorders
Headache ^f	75 (14)	52 (10)	56 (10)	< 1%	< 1%	< 1%
Dysgeusia ^f	39 (7)	45 (8)	22 (4)	< 1%	0 (0.0)	< 1%
Blood and lymphatic system disorders ^d
Anemia	233 (44)	193 (36)	229 (42)	97 (18)	85 (16)	102 (19)
Neutropenia	186 (35)	178 (33)	328 (61)	148 (28)	143 (26)	243 (45)
Thrombocytopenia	104 (20)	100 (19)	135 (25)	44 (8)	43 (8)	60 (11)
Febrile neutropenia	7 (1)	17 (3)	15 (3)	6 (1)	16 (3)	14 (3)
Pancytopenia	< 1%	6 (1)	7 (1)	< 1%	< 1%	< 1%
Respiratory, thoracic and mediastinal disorders
Cough ^f	121 (23)	94 (17)	68 (13)	< 1%	< 1%	< 1%
Dyspnea ^c,e	117 (22)	89 (16)	113 (21)	30 (6)	22 (4)	18 (3)
Epistaxis ^f	32 (6)	31 (6)	17 (3)	< 1%	< 1%	0 (0)
Oropharyngeal pain ^f	30 (6)	22 (4)	14 (3)	0 (0)	0 (0)	0 (0)
Dyspnea exertional ^e	27 (5)	29 (5)	< 5%	6 (1)	< 1%	0 (0)
Metabolism and nutrition disorders
Decreased appetite	123 (23)	115 (21)	72 (13)	14 (3)	7 (1)	< 1%
Hypokalemia ^%	91 (17)	62 (11)	38 (7)	35 (7)	20 (4)	11 (2)
Hyperglycemia	62 (12)	52 (10)	19 (4)	28 (5)	23 (4)	9 (2)
Hypocalcemia	57 (11)	56 (10)	31 (6)	23 (4)	19 (4)	8 (1)
Dehydration ^%	25 (5)	29 (5)	17 (3)	8 (2)	13 (2)	9 (2)
Gout ^e	< 5%	< 5%	< 5%	8 (2)	0 (0)	0 (0)
Diabetes mellitus ^{% e}	< 5%	< 5%	< 5%	8 (2)	< 1%	< 1%
Hypophosphatemia ^e	< 5%	< 5%	< 5%	7 (1)	< 1%	< 1%
Hyponatremia ^{% e}	< 5%	< 5%	< 5%	7 (1)	13 (2)	6 (1)
Skin and subcutaneous tissue disorders
Rash	139 (26)	151 (28)	105 (19)	39 (7)	38 (7)	33 (6)
Pruritus ^f	47 (9)	49 (9)	24 (4)	< 1%	< 1%	< 1%
Psychiatric disorders
Insomnia	147 (28)	127 (24)	53 (10)	< 1%	6 (1)	0 (0)
Depression	58 (11)	46 (9)	30 (6)	10 (2)	< 1%	< 1%
Vascular disorders
Deep vein thrombosis ^c%	55 (10)	39 (7)	22 (4)	30 (6)	20 (4)	15 (3)
Hypotension ^c%	51 (10)	35 (6)	36 (7)	11 (2)	8 (1)	6 (1)
Injury, Poisoning, and Procedural Complications
Fall ^f	43 (8)	25 (5)	25 (5)	< 1%	6 (1)	6 (1)
Contusion ^f	33 (6)	24 (4)	15 (3)	< 1%	< 1%	0 (0)
Eye disorders
Cataract	73 (14)	31 (6)	< 1%	31 (6)	14 (3)	< 1%
Cataract subcapsular ^e	< 5%	< 5%	< 5%	7 (1)	0 (0)	0 (0)
Investigations
Weight decreased	72 (14)	78 (14)	48 (9)	11 (2)	< 1%	< 1%
Cardiac disorders
Atrial fibrillation ^c	37 (7)	25 (5)	25 (5)	13 (2)	9 (2)	6 (1)
Myocardial infarction (including acute) ^{c, e}	< 5%	< 5%	< 5%	10 (2)	< 1%	< 1%
Renal and Urinary disorders
Renal failure (including acute) ^c@,f	49 (9)	54 (10)	37 (7)	28 (5)	33 (6)	29 (5)
Neoplasms benign, malignant and unspecified (Including cysts and polyps)
Squamous cell carcinoma ^{c e}	< 5%	< 5%	< 5%	8 (2)	< 1%	0 (0)
Basal cell carcinoma ^{c e,f}	< 5%	< 5%	< 5%	< 1%	< 1%	0 (0)

Note: A subject with multiple occurrences of an adverse reaction is counted only once under the applicable Body System/Adverse Reaction.
^aAll treatment-emergent adverse events in at least 5% of subjects in the Rd Continuous or Rd18 Arms and at least a 2% higher frequency (%) in either the Rd Continuous or Rd18 Arms compared to the MPT Arm.
^bAll grade 3 or 4 treatment-emergent adverse events in at least 1% of subjects in the Rd Continuous or Rd18 Arms and at least a 1% higher frequency (%) in either the Rd Continuous or Rd18 Arms compared to the MPT Arm.
^cSerious treatment-emergent adverse events in at least 1% of subjects in the Rd Continuous or Rd18 Arms and at least a 1% higher frequency (%) in either the Rd Continuous or Rd18 Arms compared to the MPT Arm.
^dPreferred terms for the blood and lymphatic system disorders body system were included by medical judgment as known adverse reactions for Rd Continuous/Rd18, and have also been reported as serious.
^eFootnote “a” not applicable.
^fFootnote “b” not applicable.
^@- adverse reactions in which at least one resulted in a fatal outcome.
^%- adverse reactions in which at least one was considered to be life threatening (if the outcome of the reaction was death, it is included with death cases).
•Adverse reactions included in combined adverse reaction terms:
Abdominal Pain: Abdominal pain, abdominal pain upper, abdominal pain lower, gastrointestinal pain
Pneumonias: Pneumonia, lobar pneumonia, pneumonia pneumococcal, bronchopneumonia, pneumocystis jiroveci pneumonia, pneumonia legionella, pneumonia staphylococcal, pneumonia klebsiella, atypical pneumonia, pneumonia bacterial, pneumonia escherichia, pneumonia streptococcal, pneumonia viral
Sepsis: Sepsis, septic shock, urosepsis, escherichia sepsis, neutropenic sepsis, pneumococcal sepsis, staphylococcal sepsis, bacterial sepsis, meningococcal sepsis, enterococcal sepsis, klebsiella sepsis, pseudomonal sepsis
Rash: Rash, rash pruritic, rash erythematous, rash maculo-papular, rash generalized, rash papular, exfoliative rash, rash follicular, rash macular, drug rash with eosinophilia and systemic symptoms, erythema multiforme, rash pustular
Deep Vein Thrombosis: Deep vein thrombosis, venous thrombosis limb, venous thrombosis

Newly Diagnosed MM - Lenalidomide Maintenance Therapy Following Auto-HSCT:

Data were evaluated from 1018 patients in two randomized trials who received at least one dose of lenalidomide 10 mg daily as maintenance therapy after auto-HSCT until progressive disease or unacceptable toxicity. The mean treatment duration for lenalidomide treatment was 30.3 months for Maintenance Study 1 and 24.0 months for Maintenance Study 2 (overall range across both studies from 0.1 to 108 months). As of the cut-off date of 1 Mar 2015, 48 patients (21%) in the Maintenance Study 1 lenalidomide arm were still on treatment and none of the patients in the Maintenance Study 2 lenalidomide arm were still on treatment at the same cut-off date

The adverse reactions listed from Maintenance Study 1 included events reported post-transplant (completion of high-dose melphalan /auto-HSCT), and the maintenance treatment period. In Maintenance Study 2, the adverse reactions were from the maintenance treatment period only. In general, the most frequently reported adverse reactions (more than 20% in the lenalidomide arm) across both studies were neutropenia, thrombocytopenia, leukopenia, anemia, upper respiratory tract infection, bronchitis, nasopharyngitis, cough, gastroenteritis, diarrhea, rash, fatigue, asthenia, muscle spasm and pyrexia. The most frequently reported Grade 3 or 4 reactions (more than 20% in the lenalidomide arm) included neutropenia, thrombocytopenia, and leukopenia. The serious adverse reactions lung infection and neutropenia (more than 4.5%) occurred in the lenalidomide arm.

For lenalidomide, the most common adverse reactions leading to dose interruption were hematologic events (29.7%, data available in Maintenance Study 2 only). The most common adverse reaction leading to dose reduction of lenalidomide were hematologic events (17.7%, data available in Maintenance Study 2 only). The most common adverse reactions leading to discontinuation of lenalidomide were thrombocytopenia (2.7%) in Maintenance Study 1 and neutropenia (2.4%) in Maintenance Study 2.

The frequencies of onset of adverse reactions were generally highest in the first 6 months of treatment and then the frequencies decreased over time or remained stable throughout treatment.

Table 5 summarizes the adverse reactions reported for the lenalidomide and placebo maintenance treatment arms.

Table 5: All Adverse Reactions in ≥5% and Grade 3/4 Adverse Reactions in ≥1% of Patients with MM in the Lenalidomide Vs Placebo Arms•

Maintenance Study 1	Maintenance Study 2
Body System Adverse Reaction	All Adverse Reactions ^a	Grade 3/4 Adverse Reactions ^b	All Adverse Reactions ^a	Grade 3/4 Adverse Reactions ^b
Lenalidomide (N=224) n (%)	Placebo (N=221) n (%)	Lenalidomide (N=224) n (%)	Placebo (N=221) n (%)	Lenalidomide (N=293) n (%)	Placebo (N=280) n (%)	Lenalidomide (N=293) n (%)	Placebo (N=280) n (%)
Blood and lymphatic system disorders
Neutropenia ^{c %}	177 (79)	94 (43)	133 (59)	73 (33)	178 (61)	33 (12)	158 (54)	21 (8)
Thrombocytopenia ^{c %}	162 (72)	101 (46)	84 (38)	67 (30)	69 (24)	29 (10)	38 (13)	8 (3)
Leukopenia ^c	51 (23)	25 (11)	45 (20)	22 (10)	93 (32)	21 (8)	71 (24)	5 (2)
Anemia	47 (21)	27 (12)	23 (10)	18 (8)	26 (9)	15 (5)	11 (4)	3 (1)
Lymphopenia	40 (18)	29 (13)	37 (17)	26 (12)	13 (4)	3 (1)	11 (4)	< 1%
Pancytopenia ^{c d %}	< 1%	0 (0)	0 (0)	0 (0)	12 (4)	< 1%	7 (2)	< 1%
Febrile neutropenia ^c	39 (17)	34 (15)	39 (17)	34 (15)	7 (2)	< 1%	5 (2)	< 1%
Infections and infestations ^#
Upper respiratory tract infection ^e	60 (27)	35 (16)	7 (3)	9 (4)	32 (11)	18 (6)	< 1%	0 (0)
Neutropenic infection	40 (18)	19 (9)	27 (12)	14 (6)	0 (0)	0 (0)	0 (0)	0 (0)
Pneumonias• ^{c %}	31 (14)	15 (7)	23 (10)	7 (3)	50 (17)	13 (5)	27 (9)	5 (2)
Bronchitis ^c	10 (4)	9 (4)	< 1%	5 (2)	139 (47)	104 (37)	4 (1)	< 1%
Nasopharyngitis ^e	5 (2)	< 1%	0 (0)	0 (0)	102 (35)	84 (30)	< 1%	0 (0)
Gastroenteritis ^c	0 (0)	0 (0)	0 (0)	0 (0)	66 (23)	55 (20)	6 (2)	0 (0)
Rhinitis ^e	< 1%	0 (0)	0 (0)	0 (0)	44 (15)	19 (7)	0 (0)	0 (0)
Sinusitis ^e	8 (4)	3 (1)	0 (0)	0 (0)	41 (14)	26 (9)	0 (0)	< 1%
Influenza ^c	8 (4)	5 (2)	< 1%	< 1%	39 (13)	19 (7)	3 (1)	0 (0)
Lung infection ^c	21 (9)	< 1%	19 (8)	< 1%	9 (3)	4 (1)	< 1%	0 (0)
Lower respiratory tract infection ^e	13 (6)	5 (2)	6 (3)	4 (2)	4 (1)	4 (1)	0 (0)	< 1%
Infection ^c	12 (5)	6 (3)	9 (4)	5 (2)	17 (6)	5 (2)	0 (0)	0 (0)
Urinary tract infection ^{c d e}	9 (4)	5 (2)	4 (2)	4 (2)	22 (8)	17 (6)	< 1%	0 (0)
Lower respiratory tract infection bacterial ^d	6 (3)	< 1%	4 (2)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)
Bacteremia ^d	5 (2)	0 (0)	4 (2)	0 (0)	0 (0)	0 (0)	0 (0)	0 (0)
Herpes zoster ^{c d}	11 (5)	10 (5)	3 (1)	< 1%	29 (10)	25 (9)	6 (2)	< 1%
Sepsis• ^{c d @}	< 1%	< 1%	0 (0)	0 (0)	6 (2)	< 1%	4 (1)	< 1%
Gastrointestinal disorders
Diarrhea	122 (54)	83 (38)	22 (10)	17 (8)	114 (39)	34 (12)	7 (2)	0 (0)
Nausea ^e	33 (15)	22 (10)	16 (7)	10 (5)	31 (11)	28 (10)	0 (0)	0 (0)
Vomiting	17 (8)	12 (5)	8 (4)	5 (2)	16 (5)	15 (5)	< 1%	0 (0)
Constipation ^e	12 (5)	8 (4)	0 (0)	0 (0)	37 (13)	25 (9)	< 1%	0 (0)
Abdominal pain ^e	8 (4)	7 (3)	< 1%	4 (2)	31 (11)	15 (5)	< 1%	< 1%
Abdominal pain upper ^e	0 (0)	0 (0)	0 (0)	0 (0)	20 (7)	12 (4)	< 1%	0 (0)
General disorders and administration site conditions
Asthenia	0 (0)	< 1%	0 (0)	0 (0)	87 (30)	53 (19)	10 (3)	< 1%
Fatigue	51 (23)	30 (14)	21 (9)	9 (4)	31 (11)	15 (5)	3 (1)	0 (0)
Pyrexia ^e	17 (8)	10 (5)	< 1%	< 1%	60 (20)	26 (9)	< 1%	0 (0)
Skin and subcutaneous tissue disorders
Dry skin ^e	9 (4)	4 (2)	0 (0)	0 (0)	31 (11)	21 (8)	0 (0)	0 (0)
Rash	71 (32)	48 (22)	11 (5)	5 (2)	22 (8)	17 (6)	3 (1)	0 (0)
Pruritus	9 (4)	4 (2)	3 (1)	0 (0)	21 (7)	25 (9)	< 1%	0 (0)
Nervous system disorders
Paresthesia ^e	< 1%	0 (0)	0 (0)	0 (0)	39 (13)	30 (11)	< 1%	0 (0)
Peripheral Neuropathy• ^e	34 (15)	30 (14)	8 (4)	8 (4)	29 (10)	15 (5)	4 (1)	< 1%
Headache ^d	11 (5)	8 (4)	5 (2)	< 1%	25 (9)	21 (8)	0 (0)	0 (0)
Investigations
Alanine aminotransferase increased	16 (7)	3 (1)	8 (4)	0 (0)	5 (2)	5 (2)	0 (0)	< 1%
Aspartate aminotransferase increased ^d	13 (6)	5 (2)	6 (3)	0 (0)	< 1%	5 (2)	0 (0)	0 (0)
Metabolism and nutrition disorders
Hypokalemia	24 (11)	13 (6)	16 (7)	12 (5)	12 (4)	< 1%	< 1%	0 (0)
Dehydration	9 (4 )	5 (2)	7 (3)	3 (1)	0 (0)	0 (0)	0 (0)	0 (0)
Hypophosphatemia ^d	16 (7)	15 (7)	13 (6)	14 (6)	0 (0)	< 1%	0 (0)	0 (0)
Musculoskeletal and connective tissue disorders
Muscle spasms ^e	0 (0)	< 1%	0 (0)	0 (0)	98 (33)	43 (15)	< 1%	0 (0)
Myalgia ^e	7 (3)	8 (4)	3 (1)	5 (2)	19 (6)	12 (4)	< 1%	< 1%
Musculoskeletal pain ^e	< 1%	< 1%	0 (0)	0 (0)	19 (6)	11 (44)	0 (0)	0 (0)
Hepatobiliary disorders
Hyperbilirubinemia ^e	34 (15)	19 (9)	4 (2)	< 1%	4 (1)	< 1%	< 1%	0 (0)
Respiratory, thoracic and mediastinal disorders
Cough ^e	23 (10)	12 (5)	3 (1)	< 1%	80 (27)	56 (20)	0 (0)	0 (0)
Dyspnea ^{c e}	15 (7)	9 (4)	8 (4)	4 (2)	17 (6)	9 (3)	< 1%	0 (0)
Rhinorrhea ^e	0 (0)	3 (1)	0 (0)	0 (0)	15 (5)	6 (2)	0 (0)	0 (0)
Pulmonary embolism ^{c d e}	0 (0)	0 (0)	0 (0)	0 (0)	3 (1)	0 (0)	< 1%	0 (0)
Vascular disorders
Deep vein thrombosis• ^{c d %}	8 (4)	< 1%	5 (2)	< 1%	7 (2)	< 1%	4 (1)	< 1%
Neoplasms benign, malignant and unspecified (including cysts and polyps)
Myelodysplastic syndrome ^{c d e}	5 (2)	0 (0)	< 1%	0 (0)	3 (1)	0 (0)	< 1%	0 (0)

Note : Adverse Events (AEs) are coded to Body System /Adverse Reaction using MedDRA v15.1. A subject with multiple occurrences of an adverse reaction is counted only once under the applicable Body System/Adverse Reaction.
^aAll treatment-emergent AEs in at least 5% of patients in the lenalidomide Maintenance group and at least 2% higher frequency (%) than the Placebo Maintenance group.
^bAll grade 3 or 4 treatment-emergent AEs in at least 1% of patients in the lenalidomide Maintenance group and at least 1% higher frequency (%) than the Placebo Maintenance group.
^cAll serious treatment-emergent AEs in at least 1% of patients in the lenalidomide Maintenance group and at least 1% higher frequency (%) than the Placebo Maintenance group.
^dFootnote “a” not applicable for either study
^eFootnote “b” not applicable for either study
^@-ADRs where at least one resulted in a fatal outcome
^%- ADRs where at least one was considered to be Life Threatening (if the outcome of the event was death, it is included with death cases)
# - All adverse reactions under Body System of Infections and Infestation except for rare infections of Public Health interest will be considered listed
• Adverse Reactions for combined ADR terms (based on relevant TEAE PTs included in Maintenance Studies 1 and 2 [per MedDRA v 15.1]):
Pneumonias Bronchopneumonia, Lobar pneumonia, Pneumocystis jiroveci pneumonia, Pneumonia, Pneumonia klebsiella, Pneumonia legionella, Pneumonia mycoplasmal, Pneumonia pneumococcal, Pneumonia streptococcal, Pneumonia viral, Lung disorder, Pneumonitis
Sepsis : Bacterial sepsis, Pneumococcal sepsis, Sepsis, Septic shock, Staphylococcal sepsis
Peripheral neuropathy : Neuropathy peripheral, Peripheral motor neuropathy, Peripheral sensory neuropathy, Polyneuropathy Deep vein thrombosis: Deep vein thrombosis, Thrombosis, Venous thrombosis

After At Least One Prior Therapy for MM:

Data were evaluated from 703 patients in two studies who received at least one dose of lenalidomide/dexamethasone (353 patients) or placebo/dexamethasone (350 patients).

In the lenalidomide/dexamethasone treatment group, 269 patients (76%) had at least one dose interruption with or without a dose reduction of lenalidomide capsules compared to 199 patients (57%) in the placebo/dexamethasone treatment group. Of these patients who had one dose interruption with or without a dose reduction, 50% in the lenalidomide/dexamethasone treatment group had at least one additional dose interruption with or without a dose reduction compared to 21% in the placebo/dexamethasone treatment group. Most adverse reactions and Grade 3/4 adverse reactions were more frequent in patients who received the combination of lenalidomide/dexamethasone compared to placebo/dexamethasone.

Tables 6, 7, and 8 summarize the adverse reactions reported for lenalidomide/dexamethasone and placebo/dexamethasone groups.

Table 6: Adverse Reactions Reported in ≥5% of Patients and with a ≥2% Difference in Proportion of Patients with MM between the Lenalidomide/dexamethasone and Placebo/dexamethasone Groups

Body System Adverse Reaction	Lenalidomide/Dex (N=353) n (%)	Placebo/Dex (N=350) n (%)
Blood and lymphatic system disorders
Neutropenia ^%	149 (42)	22 (6)
Anemia ^@	111 (31)	83 (24)
Thrombocytopenia ^@	76 (22)	37 (11)
Leukopenia	28 (8)	4 (1)
Lymphopenia	19 (5)	5 (1)
General disorders and administration site conditions
Fatigue	155 (44)	146 (42)
Pyrexia	97 (27)	82 (23)
Peripheral edema	93 (26)	74 (21)
Chest pain	29 (8)	20 (6)
Lethargy	24 (7)	8 (2)
Gastrointestinal disorders
Constipation	143 (41)	74 (21)
Diarrhea ^@	136 (39)	96 (27)
Nausea ^@	92 (26)	75 (21)
Vomiting ^@	43 (12)	33 (9)
Abdominal pain ^@	35 (10)	22 (6)
Dry mouth	25 (7)	13 (4)
Musculoskeletal and connective tissue disorders
Muscle cramp	118 (33)	74 (21)
Back pain	91 (26)	65 (19)
Bone pain	48 (14)	39 (11)
Pain in limb	42 (12)	32 (9)
Nervous system disorders
Dizziness	82 (23)	59 (17)
Tremor	75 (21)	26 (7)
Dysgeusia	54 (15)	34 (10)
Hypoesthesia	36 (10)	25 (7)
Neuropathy ^a	23 (7)	13 (4)
Respiratory, thoracic and mediastinal disorders
Dyspnea	83 (24)	60 (17)
Nasopharyngitis	62 (18)	31 (9)
Pharyngitis	48 (14)	33 (9)
Bronchitis	40 (11)	30 (9)
Infections ^band infestations
Upper respiratory tract infection	87 (25)	55 (16)
Pneumonia ^@	48 (14)	29 (8)
Urinary tract infection	30 (8)	19 (5)
Sinusitis	26 (7)	16 (5)
Skin and subcutaneous system disorders
Rash ^c	75 (21)	33 (9)
Sweating increased	35 (10)	25 (7)
Dry skin	33 (9)	14 (4)
Pruritus	27 (8)	18 (5)
Metabolism and nutrition disorders
Anorexia	55 (16)	34 (10)
Hypokalemia	48 (14)	21 (6)
Hypocalcemia	31 (9)	10 (3)
Appetite decreased	24 (7)	14 (4)
Dehydration	23 (7)	15 (4)
Hypomagnesemia	24 (7)	10 (3)
Investigations
Weight decreased	69 (20)	52 (15)
Eye disorders
Blurred vision	61 (17)	40 (11)
Vascular disorders
Deep vein thrombosis ^%	33 (9)	15 (4)
Hypertension	28 (8)	20 (6)
Hypotension	25 (7)	15 (4)

Table 7: Grade 3/4 Adverse Reactions Reported in ≥2% Patients and with a ≥1% Difference in Proportion of Patients with MM between the Lenalidomide/dexamethasone and Placebo/dexamethasone groups

Body System Adverse Reaction	Lenalidomide/Dex (N=353) n (%)	Placebo/Dex (N=350) n (%)
Blood and lymphatic system disorders
Neutropenia ^%	118 (33)	12 (3)
Thrombocytopenia ^@	43 (12)	22 (6)
Anemia ^@	35 (10)	20 (6)
Leukopenia	14 (4)	< 1%
Lymphopenia	10 (3)	4 (1)
Febrile neutropenia ^%	8 (2)	0 (0)
General disorders and administration site conditions
Fatigue	23 (7)	17 (5)
Vascular disorders
Deep vein thrombosis ^%	29 (8)	12 (3)
Infections and infestations
Pneumonia ^@	30 (8)	19 (5)
Urinary tract infection	5 (1)	< 1%
Metabolism and nutrition disorders
Hypokalemia	17 (5)	5 (1)
Hypocalcemia	13 (4)	6 (2)
Hypophosphatemia	9 (3)	0 (0)
Respiratory, thoracic and mediastinal disorders
Pulmonary embolism ^@	14 (4)	< 1%
Respiratory distress ^@	4 (1)	0 (0)
Musculoskeletal and connective tissue disorders
Muscle weakness	20 (6)	10 (3)
Gastrointestinal disorders
Diarrhea ^@	11 (3)	4 (1)
Constipation	7 (2)	< 1%
Nausea ^@	6 (2)	< 1%
Cardiac disorders
Atrial fibrillation ^@	13 (4)	4 (1)
Tachycardia	6 (2)	< 1%
Cardiac failure congestive ^@	5 (1)	< 1%
Nervous system disorders
Syncope	10 (3)	< 1%
Dizziness	7 (2)	< 1%
Eye disorders
Cataract	6 (2)	< 1%
Cataract unilateral	5 (1)	0 (0)
Psychiatric disorder
Depression	10 (3)	6 (2)

Table 8: Serious Adverse Reactions Reported in ≥1% Patients and with a ≥1% Difference in Proportion of Patients with MM between the Lenalidomide/dexamethasone and Placebo/dexamethasone Groups

Body System Adverse Reaction	Lenalidomide/Dex (N=353) n (%)	Placebo/Dex (N=350) n (%)
Blood and lymphatic system disorders
Febrile neutropenia ^%	6 (2)	0 (0)
Vascular disorders
Deep vein thrombosis ^%	26 (7)	11 (3)
Infections and infestations
Pneumonia ^@	33 (9)	21 (6)
Respiratory, thoracic, and mediastinal disorders
Pulmonary embolism ^@	13 (4)	< 1%
Cardiac disorders
Atrial fibrillation ^@	11 (3)	< 1%
Cardiac failure congestive ^@	5 (1)	0 (0)
Nervous system disorders
Cerebrovascular accident ^@	7 (2)	< 1%
Gastrointestinal disorders
Diarrhea ^@	6 (2)	< 1%
Musculoskeletal and connective tissue disorders
Bone pain	4 (1)	0 (0)

For Tables 6, 7 and 8 above:

^@- adverse reactions in which at least one resulted in a fatal outcome.

^%- adverse reactions in which at least one was considered to be life threatening (if the outcome of the reaction was death, it is included with death cases).

Median duration of exposure among patients treated with lenalidomide/dexamethasone was 44 weeks while median duration of exposure among patients treated with placebo/dexamethasone was 23 weeks. This should be taken into consideration when comparing frequency of adverse reactions between two treatment groups lenalidomide/dexamethasone vs. placebo/dexamethasone.

Venous and Arterial Thromboembolism [see Boxed Warning, Warnings and Precautions (5.4)]

VTE and ATE are increased in patients treated with lenalidomide capsules.

Deep vein thrombosis (DVT) was reported as a serious (7.4%) or severe (8.2%) adverse drug reaction at a higher rate in the lenalidomide/dexamethasone group compared to 3.1 % and 3.4% in the placebo/dexamethasone group, respectively in the 2 studies in patients with at least 1 prior therapy with discontinuations due to DVT adverse reactions reported at comparable rates between groups. In the NDMM study, DVT was reported as an adverse reaction (all grades: 10.3%, 7.2%, 4.1%), as a serious adverse reaction (3.6%, 2.0%, 1.7%), and as a Grade 3/4 adverse reaction (5.6%, 3.7%, 2.8%) in the Rd Continuous, Rd18, and MPT Arms, respectively. Discontinuations and dose reductions due to DVT adverse reactions were reported at comparable rates between the Rd Continuous and Rd18 Arms (both <1%).

Interruption of lenalidomide treatment due to DVT adverse reactions was reported at comparable rates between the Rd Continuous (2.3%) and Rd18 (1.5%) arms. Pulmonary embolism (PE) was reported as a serious adverse drug reaction (3.7%) or Grade 3/4 (4.0%) at a higher rate in the lenalidomide/dexamethasone group compared to 0.9% (serious or grade 3/4) in the placebo/dexamethasone group in the 2 studies in patients with, at least 1 prior therapy, with discontinuations due to PE adverse reactions reported at comparable rates between groups. In the NDMM study, the frequency of adverse reactions of PE was similar between the Rd Continuous, Rd18, and MPT Arms for adverse reactions (all grades: 3.9%, 3.3%, and 4.3%, respectively), serious adverse reactions (3.8%, 2.8%, and 3.7%, respectively), and grade 3/4 adverse reactions (3.8%, 3.0%, and 3.7%, respectively).

Myocardial infarction was reported as a serious (1.7%) or severe (1.7%) adverse drug reaction at a higher rate in the lenalidomide/dexamethasone group compared to 0.6 % and 0.6% respectively in the placebo/dexamethasone group. Discontinuation due to MI (including acute) adverse reactions was 0.8% in lenalidomide/dexamethasone group and none in the placebo/dexamethasone group. In the NDMM study, myocardial infarction (including acute) was reported as an adverse reaction (all grades: 2.4%, 0.6%, and 1.1%), as a serious adverse reaction, (2.3%, 0.6%, and 1.1%), or as a severe adverse reaction (1.9%, 0.6%, and 0.9%) in the Rd Continuous, Rd18, and MPT Arms, respectively.

Stroke (CVA) was reported as a serious (2.3%) or severe (2.0%) adverse drug reaction in the lenalidomide/dexamethasone group compared to 0.9% and 0.9% respectively in the placebo/dexamethasone group. Discontinuation due to stroke (CVA) was 1.4% in lenalidomide/ dexamethasone group and 0.3% in the placebo/dexamethasone group. In the NDMM study, CVA was reported as an adverse reaction (all grades: 0.8%, 0.6%, and 0.6%), as a serious adverse reaction (0.8%, 0.6 %, and 0.6%), or as a severe adverse reaction (0.6%, 0.6%, 0.2%) in the Rd Continuous, Rd18, and MPT arms respectively.

Other Adverse Reactions: After At Least One Prior Therapy for MM

In these 2 studies, the following adverse drug reactions (ADRs) not described above that occurred at ≥1% rate and of at least twice of the placebo percentage rate were reported:

Blood and lymphatic system disorders: pancytopenia, autoimmune hemolytic anemia

Cardiac disorders: bradycardia, myocardial infarction, angina pectoris

Endocrine disorders: hirsutism

Eye disorders: blindness, ocular hypertension

Gastrointestinal disorders: gastrointestinal hemorrhage, glossodynia

General disorders and administration site conditions: malaise

Investigations: liver function tests abnormal, alanine aminotransferase increased

Nervous system disorders: cerebral ischemia

Psychiatric disorders: mood swings, hallucination, loss of libido

Reproductive system and breast disorders: erectile dysfunction

Respiratory, thoracic and mediastinal disorders: cough, hoarseness

Skin and subcutaneous tissue disorders: exanthem, skin hyperpigmentation

Myelodysplastic Syndromes

A total of 148 patients received at least 1 dose of 10 mg lenalidomide capsules in the del 5q MDS clinical study. At least one adverse reaction was reported in all of the 148 patients who were treated with the 10 mg starting dose of lenalidomide capsules. The most frequently reported adverse reactions were related to blood and lymphatic system disorders, skin and subcutaneous tissue disorders, gastrointestinal disorders, and general disorders and administrative site conditions .

Thrombocytopenia (61.5%; 91/148) and neutropenia (58.8%; 87/148) were the most frequently reported adverse reactions. The next most common adverse reactions observed were diarrhea (48.6%; 72/148), pruritus (41.9%; 62/148), rash (35.8%; 53/148) and fatigue (31.1%; 46/148). Table 9 summarizes the adverse reactions that were reported in ≥ 5% of the lenalidomide capsules treated patients in the del 5q MDS clinical study. Table 10 summarizes the most frequently observed Grade 3 and Grade 4 adverse reactions regardless of relationship to treatment with lenalidomide. In the single-arm studies conducted, it is often not possible to distinguish adverse reactions that are drug-related and those that reflect the patient’s underlying disease.

Table 9: Summary of Adverse Reactions Reported in ≥5% of the Lenalidomide Treated Patients in del 5q MDS Clinical Study

Body System Adverse Reaction ^a	10 mg Overall (N=148)
Patients with at least one adverse reaction	148 (100)
Blood and Lymphatic System Disorders
Thrombocytopenia	91 (61)
Neutropenia	87 (59)
Anemia	17 (11)
Leukopenia	12 (8)
Febrile Neutropenia	8 (5)
Skin and Subcutaneous Tissue Disorders
Pruritus	62 (42)
Rash	53 (36)
Dry Skin	21 (14)
Contusion	12 (8)
Night Sweats	12 (8)
Sweating Increased	10 (7)
Ecchymosis	8 (5)
Erythema	8 (5)
Gastrointestinal Disorders
Diarrhea	72 (49)
Constipation	35 (24)
Nausea	35 (24)
Abdominal Pain	18 (12)
Vomiting	15 (10)
Abdominal Pain Upper	12 (8)
Dry Mouth	10 (7)
Loose Stools	9 (6)
Respiratory, Thoracic and Mediastinal Disorders
Nasopharyngitis	34 (23)
Cough	29 (20)
Dyspnea	25 (17)
Pharyngitis	23 (16)
Epistaxis	22 (15)
Dyspnea Exertional	10 (7)
Rhinitis	10 (7)
Bronchitis	9 (6)
General Disorders and Administration Site Conditions
Fatigue	46 (31)
Pyrexia	31 (21)
Edema Peripheral	30 (20)
Asthenia	22 (15)
Edema	15 (10)
Pain	10 (7)
Rigors	9 (6)
Chest Pain	8 (5)
Musculoskeletal and Connective Tissue Disorders
Arthralgia	32 (22)
Back Pain	31 (21)
Muscle Cramp	27 (18)
Pain in Limb	16 (11)
Myalgia	13 (9)
Peripheral Swelling	12 (8)
Nervous System Disorders
Dizziness	29 (20)
Headache	29 (20)
Hypoesthesia	10 (7)
Dysgeusia	9 (6)
Peripheral Neuropathy	8 (5)
Infections and Infestations
Upper Respiratory Tract Infection	22 (15)
Pneumonia	17 (11)
Urinary Tract Infection	16 (11)
Sinusitis	12 (8)
Cellulitis	8 (5)
Metabolism and Nutrition Disorders
Hypokalemia	16 (11)
Anorexia	15 (10)
Hypomagnesemia	9 (6)
Investigations
Alanine Aminotransferase Increased	12 (8)
Psychiatric Disorders
Insomnia	15 (10)
Depression	8 (5)
Renal and Urinary Disorders
Dysuria	10 (7)
Vascular Disorders
Hypertension	9 (6)
Endocrine Disorders
Acquired Hypothyroidism	10 (7)
Cardiac Disorders
Palpitations	8 (5)

^aBody System and adverse reactions are coded using the MedDRA dictionary. Body System and adverse reactions are listed in descending order of frequency for the Overall column. A patient with multiple occurrences of an adverse reaction is counted only once under the applicable Body System/Adverse Reaction.

Table 10: Most Frequently Observed Grade 3 and 4 Adverse Reactions ¹Regardless of Relationship to Study Drug Treatment in the del 5q MDS Clinical Study

Adverse Reaction ²	10 mg (N=148)
Patients with at least one Grade 3/4 AE	131 (89)
Neutropenia	79 (53)
Thrombocytopenia	74 (50)
Pneumonia	11 (7)
Rash	10 (7)
Anemia	9 (6)
Leukopenia	8 (5)
Fatigue	7 (5)
Dyspnea	7 (5)
Back Pain	7 (5)
Febrile Neutropenia	6 (4)
Nausea	6 (4)
Diarrhea	5 (3)
Pyrexia	5 (3)
Sepsis	4 (3)
Dizziness	4 (3)
Granulocytopenia	3 (2)
Chest Pain	3 (2)
Pulmonary Embolism	3 (2)
Respiratory Distress	3 (2)
Pruritus	3 (2)
Pancytopenia	3 (2)
Muscle Cramp	3 (2)
Respiratory Tract Infection	2 (1)
Upper Respiratory Tract Infection	2 (1)
Asthenia	2 (1)
Multi-organ Failure	2 (1)
Epistaxis	2 (1)
Hypoxia	2 (1)
Pleural Effusion	2 (1)
Pneumonitis	2 (1)
Pulmonary Hypertension	2 (1)
Vomiting	2 (1)
Sweating Increased	2 (1)
Arthralgia	2 (1)
Pain in Limb	2 (1)
Headache	2 (1)
Syncope	2 (1)

¹Adverse reactions with frequency ≥1% in the 10 mg Overall group. Grade 3 and 4 are based on National Cancer Institute Common Toxicity Criteria version 2.
²Adverse reactions are coded using the MedDRA dictionary. A patient with multiple occurrences of an adverse reaction is counted only once in the adverse reaction category

In other clinical studies of lenalidomide capsules in MDS patients, the following serious adverse reactions (regardless of relationship to study drug treatment) not described in Table 9 or 10 were reported:

Blood and lymphatic system disorders: warm type hemolytic anemia, splenic infarction, bone marrow depression, coagulopathy, hemolysis, hemolytic anemia, refractory anemia

Cardiac disorders: cardiac failure congestive, atrial fibrillation, angina pectoris, cardiac arrest, cardiac failure, cardio-respiratory arrest, cardiomyopathy, myocardial infarction, myocardial ischemia, atrial fibrillation aggravated, bradycardia, cardiogenic shock, pulmonary edema, supraventricular arrhythmia, tachyarrhythmia, ventricular dysfunction

Ear and labyrinth disorders: vertigo

Endocrine disorders: Basedow’s disease

Gastrointestinal disorders: gastrointestinal hemorrhage, colitis ischemic, intestinal perforation, rectal hemorrhage, colonic polyp, diverticulitis, dysphagia, gastritis, gastroenteritis, gastroesophageal reflux disease, obstructive inguinal hernia, irritable bowel syndrome, melena, pancreatitis due to biliary obstruction, pancreatitis, perirectal abscess, small intestinal obstruction, upper gastrointestinal hemorrhage

General disorders and administration site conditions: disease progression, fall, gait abnormal, intermittent pyrexia, nodule, rigors, sudden death

Hepatobiliary disorders: hyperbilirubinemia, cholecystitis, acute cholecystitis, hepatic failure

Immune system disorders: hypersensitivity

Infections and infestations: infection bacteremia, central line infection, clostridial infection, ear infection, Enterobacter sepsis, fungal infection, herpes viral infection NOS, influenza, kidney infection, Klebsiella sepsis, lobar pneumonia, localized infection, oral infection, Pseudomonas infection, septic shock, sinusitis acute, sinusitis, Staphylococcal infection, urosepsis

Injury, poisoning and procedural complications: femur fracture, transfusion reaction, cervical vertebral fracture, femoral neck fracture, fractured pelvis, hip fracture, overdose, post procedural hemorrhage, rib fracture, road traffic accident, spinal compression fracture

Investigations: blood creatinine increased, hemoglobin decreased, liver function tests abnormal, troponin I increased

Metabolism and nutrition disorders: dehydration, gout, hypernatremia, hypoglycemia

Musculoskeletal and connective tissue disorders: arthritis, arthritis aggravated, gouty arthritis, neck pain, chondrocalcinosis pyrophosphate

Neoplasms benign, malignant and unspecified: acute leukemia, acute myeloid leukemia, bronchoalveolar carcinoma, lung cancer metastatic, lymphoma, prostate cancer metastatic

Nervous system disorders: cerebrovascular accident, aphasia, cerebellar infarction, cerebral infarction, depressed level of consciousness, dysarthria, migraine, spinal cord compression, subarachnoid hemorrhage, transient ischemic attack

Psychiatric disorders: confusional state

Renal and urinary disorders: renal failure, hematuria, renal failure acute, azotemia, calculus ureteric, renal mass

Reproductive system and breast disorders: pelvic pain

Respiratory, thoracic and mediastinal disorders: bronchitis, chronic obstructive airways disease exacerbated, respiratory failure, dyspnea exacerbated, interstitial lung disease, lung infiltration, wheezing

Skin and subcutaneous tissue disorders: acute febrile neutrophilic dermatosis

Vascular system disorders: deep vein thrombosis, hypotension, aortic disorder, ischemia, thrombophlebitis superficial, thrombosis

Postmarketing Experience

The following adverse drug reactions have been identified from the worldwide post-marketing experience with lenalidomide. Because these reactions are reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure [see Warnings and Precautions Section (5.8 to 5.11, and 5.13)]

Endocrine disorders: Hypothyroidism, hyperthyroidism

Hepatobiliary disorders: Hepatic failure (including fatality), toxic hepatitis, cytolytic hepatitis, cholestatic hepatitis, mixed cytolytic/cholestatic hepatitis, transient abnormal liver laboratory tests

Immune system disorders: Angioedema, anaphylaxis, acute graft-versus-host disease (following allogeneic hematopoietic transplant), solid organ transplant rejection

Infections and infestations: Viral reactivation (such as hepatitis B virus and herpes zoster), progressive multifocal leukoencephalopathy (PML)

Neoplasms benign, malignant and unspecified (including cysts and polyps): Tumor lysis syndrome, tumor flare reaction

Respiratory, thoracic and mediastinal disorders: Pneumonitis

Skin and subcutaneous tissue disorders: Stevens-Johnson Syndrome, toxic epidermal necrolysis, drug reaction with eosinophilia and systemic symptoms (DRESS)

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