
THE SAFETY OF KISUNLA VS PLACEBO WAS STUDIED IN MORE THAN 1900 PATIENTS IN CLINICAL TRIALS1*
ADVERSE REACTIONS REPORTED IN ≥5% OF PATIENTS TREATED WITH KISUNLA AND ≥2% HIGHER THAN PLACEBO IN TRAILBLAZER-ALZ 21

The most common adverse reactions reported in ≥5% of patients treated with Kisunla (N=853) and ≥2% higher than placebo (N=874): ARIA-H microhemorrhagea (25% vs 11%), ARIA-E (24% vs 2%), ARIA-H superficial siderosisa (15% vs 3%), headache (13% vs 10%), infusion-related reactions (9% vs 0.5%).1
aAs assessed by MRI. A participant could have both microhemorrhage and superficial siderosis.1
- ARIA-E (edema) includes brain edema or sulcal effusions1
- ARIA-H (hemosiderin deposition) most commonly includes microhemorrhage and superficial siderosis1
Thirteen percent of patients on Kisunla discontinued treatment due to adverse reactions vs 4% on placebo. The most common adverse reaction leading to discontinuation was infusion-related reaction (4% of patients on Kisunla vs 0% on placebo).1
*1912 patients with Alzheimer’s disease (AD) received Kisunla once monthly for ≥6 months.1
ARIA-E=amyloid-related imaging abnormalities-edema; ARIA-H=amyloid-related imaging abnormalities-hemosiderin deposition; MRI=magnetic resonance imaging.
SELECT IMPORTANT SAFETY INFORMATION
WARNING: AMYLOID-RELATED IMAGING ABNORMALITIES
Monoclonal antibodies directed against aggregated forms of beta amyloid, including Kisunla, can cause amyloid-related imaging abnormalities (ARIA), characterized as ARIA with edema (ARIA-E) and ARIA with hemosiderin deposition (ARIA-H). ARIA usually occurs early in treatment and is usually asymptomatic, although serious and life-threatening events rarely can occur. Serious intracerebral hemorrhages >1 cm, some of which have been fatal, have been observed in patients treated with this class of medications. Because ARIA-E can cause focal neurologic deficits that can mimic an ischemic stroke, treating clinicians should consider whether such symptoms could be due to ARIA-E before giving thrombolytic therapy in a patient being treated with Kisunla.
ApoE ε4 Homozygotes: Patients who are apolipoprotein E ε4 (ApoE ε4) homozygotes treated with this class of medications, including Kisunla, have a higher incidence of ARIA, including symptomatic, serious, and severe radiographic ARIA, compared to heterozygotes and noncarriers. Testing for ApoE ε4 status should be performed prior to initiation of treatment to inform the risk of developing ARIA. Prior to testing, prescribers should discuss with patients the risk of ARIA across genotypes and the implications of genetic testing results.
Consider the benefit for the treatment of Alzheimer’s disease and risk of ARIA when deciding to treat with Kisunla.
ARIA WITH AMYLOID-TARGETING THERAPIES
Amyloid-related imaging abnormalities
Monoclonal antibodies directed against aggregated forms of beta amyloid, including Kisunla, can cause amyloid-related imaging abnormalities (ARIA), characterized as ARIA with edema (ARIA-E) and ARIA with hemosiderin deposition (ARIA-H). Incidence and timing of ARIA vary among treatments. ARIA is usually asymptomatic, although rarely serious and life-threatening events can occur. Serious intracerebral hemorrhage >1 cm, some of which has been fatal, has occurred in patients treated with this class of medications. Because ARIA-E can cause focal neurologic deficits that can mimic an ischemic stroke, treating clinicians should consider whether such symptoms could be due to ARIA-E before giving thrombolytic therapy in a patient being treated with Kisunla.1
- ApoE ε4 homozygotes: Patients treated with this class of medications, including Kisunla, who are ApoE ε4 homozygotes have a higher incidence of ARIA, including symptomatic and serious ARIA, compared to heterozygotes and noncarriers. Testing for ApoE ε4 status should be performed prior to initiation of treatment to inform the risk of developing ARIA. Prior to testing, prescribers should discuss with patients the risk of ARIA across genotypes and the implications of genetic testing results1
Consider the benefit of Kisunla for the treatment of Alzheimer’s disease (AD) and potential risk of serious adverse events associated with ARIA when deciding to initiate treatment with Kisunla.1
Obtain recent brain MRI prior to initiating treatment with Kisunla. Obtain an MRI prior to infusions 2, 3, 4, and 7, and if symptoms consistent with ARIA occur. Use caution if ARIA is observed on MRI in the presence of clinical symptoms. See Important Safety Information and Prescribing Information for dosing considerations if ARIA is observed.1,2
ARIA WITH KISUNLA
ARIA is usually asymptomatic, although rarely serious and life-threatening events can occur.1
Patients who are apolipoprotein E ε4 (ApoE ε4) homozygotes treated with this class of medications, including Kisunla, have a higher incidence of ARIA, including symptomatic, serious, and severe radiographic ARIA, compared to heterozygotes and noncarriers. Testing for ApoE ε4 status should be performed prior to initiation of treatment to inform the risk of developing ARIA.1
In TRAILBLAZER-ALZ 2, symptomatic ARIA occurred in 6% (n=52/853) of patients treated with Kisunla. Clinical symptoms associated with ARIA resolved in approximately 85% (n=44/52) of patients.1
ARIA-E1
ARIA-E (edema) includes brain edema or sulcal effusions
- ARIA-E was observed in 24% (n=201/853) of patients treated with Kisunla compared with 2% (n=17/874) of patients on placebo
- 83% of patients who experienced ARIA-E had complete radiographic resolution when managed according to protocol
ARIA-H1
ARIA-H (hemosiderin deposition) most commonly manifests as microhemorrhage and/or superficial siderosis
- ARIA-H was observed in 31% (n=263/853) of patients treated with Kisunla compared with 13% (n=111/874) of patients on placebo1
- ARIA-H does not resolve radiographically, but it can stabilize2
Intracerebral hemorrhage (>1 cm in diameter)1
- Reported in 0.5% (n=4/853) of patients on Kisunla compared to 0.2% (n=2/874) of patients on placebo
- Fatal events of intracerebral hemorrhage in patients taking Kisunla have been observed
The incidence of ARIA was higher in ApoE ε4 homozygotes (55% on Kisunla vs 22% on placebo) than in heterozygotes (36% on Kisunla vs 13% on placebo) and noncarriers (25% on Kisunla vs 12% on placebo). Among patients treated with Kisunla, symptomatic ARIA-E occurred in 8% of ApoE ε4 homozygotes compared with 7% of heterozygotes and 4% of noncarriers.1
The incidence of ARIA-H was 30% (n=106/349) in patients taking Kisunla with a concomitant antithrombotic medication within 30 days compared to 29% (n=148/504) who did not receive an antithrombotic within 30 days of an ARIA-H event. The number of events and limited exposure to non-aspirin antithrombotics limit conclusions about the associated risk of ARIA or intracerebral hemorrhage. Exercise caution when considering administering antithrombotics or thrombolytic agents to patients on Kisunla. Because ARIA-E can cause focal neurologic deficits that can mimic an ischemic stroke, treating clinicians should consider whether such symptoms could be due to ARIA-E before giving thrombolytic therapy in a patient being treated with Kisunla.1
The majority of cases occurred within the first 24 weeks of treatment, but it can occur at any time.1
ApoE=apolipoprotein E; ARIA=amyloid-related imaging abnormalities; ARIA-E=amyloid-related imaging-abnormalities-edema; ARIA-H=amyloid-related imaging abnormalities-hemosiderin deposition; MRI=magnetic resonance imaging.
SELECT IMPORTANT SAFETY INFORMATION
ARIA Monitoring and Dose Management Guidelines
- Baseline brain MRI and periodic monitoring with MRI are recommended prior to the 2nd, 3rd, 4th, and 7th infusions. Enhanced clinical vigilance for ARIA is recommended during the first 24 weeks of treatment with Kisunla. If a patient experiences symptoms suggestive of ARIA, clinical evaluation should be performed, including MRI if indicated. If ARIA is observed on MRI, careful clinical evaluation should be performed prior to continuing treatment.
- Recommendations for dosing in patients with ARIA-E and ARIA-H depend on clinical symptoms and radiographic severity. Depending on ARIA severity, use clinical judgment in considering whether to continue dosing, interrupt treatment, or permanently discontinue Kisunla. See Prescribing Information for additional dosing considerations.
- There is limited experience in patients who continued dosing through asymptomatic but radiographically mild to moderate ARIA-E. There are limited data for dosing patients who experienced recurrent episodes of ARIA-E.
ARIA MANAGEMENT
Dosing Recommendations for Patients With ARIA-E1

aMild: discomfort noticed, but no disruption of normal daily activity; Moderate: discomfort sufficient to reduce or affect normal daily activity; Severe: incapacitating, with inability to work or to perform normal daily activity.1
bSuspend until MRI demonstrates radiographic resolution and symptoms, if present, resolve; consider a follow-up MRI to assess for resolution 2 to 4 months after initial identification. Resumption of dosing should be guided by clinical judgment.1
For asymptomatic or mild clinical symptomsa with ARIA-E and mild severity on MRI, dosing may continue based on clinical judgment. For moderate or severe clinical symptoms with ARIA-E, or for moderate or severe ARIA-E on MRI, suspend dosing.1,b
Dosing Recommendations for Patients with ARIA-H1

aSuspend until MRI demonstrates radiographic stabilization and symptoms, if present, resolve; resumption of dosing should be guided by clinical judgment; consider a follow-up MRI to assess for stabilization 2 to 4 months after initial identification.1
bSuspend until MRI demonstrates radiographic stabilization and symptoms, if present, resolve. Use clinical judgment when considering whether to continue treatment or permanently discontinue Kisunla.1
For asymptomatic ARIA-H with mild severity on MRI, dosing may continue at current dose and schedule. For symptomatic ARIA-H, or for moderate or severe ARIA-H on MRI, suspend dosing.1,a,b
In patients who develop intracerebral hemorrhage >1 cm in diameter during treatment with Kisunla, suspend dosing until MRI demonstrates radiographic stabilization and symptoms, if present, resolve. Resumption of dosing should be guided by clinical judgment.1
ARIA=amyloid-related imaging abnormalities; ARIA-E=amyloid-related imaging abnormalities-edema; ARIA-H=amyloid related imaging abnormalities-hemosiderin deposition; MRI=magnetic resonance imaging.
References:
- Kisunla (donanemab-azbt). Prescribing Information. Lilly USA, LLC.
- Sims JR, Zimmer JA, Evans CD, et al; for TRAILBLAZER-ALZ 2 Investigators. Donanemab in early symptomatic Alzheimer disease: the TRAILBLAZER-ALZ 2 randomized clinical trial. JAMA. 2023;330(6):512-527.