Skip to content

Atezolizumab

Published: July 26, 2026Updated: July 26, 2026

Atezolizumab is an anti-PD-L1 monoclonal antibody immunotherapy drug used to treat various cancers including bladder (urothelial carcinoma), lung (NSCLC), breast (TNBC), and melanoma. It works by blocking the PD-L1 protein on tumor cells, which allows the immune system to recognize and attack cancer cells more effectively.

Quick summary

Atezolizumab is an immunotherapy drug that blocks PD-L1 to help the immune system fight certain cancers.

Medically reviewed by WellAlly Editorial TeamLast reviewed July 26, 2026Editorial policy

Key facts at a glance

ATC
L01FF05
RxNorm
1792776
Generic
Atezolizumab
Class
atc-l01
Brands
Tecentriq, Tecentriq Hybreza
Availability
rx
Lactation
unknown
Routes
—
Forms
injection
Regions
US, EU, CN, JP
Monitoring
—

This page is for informational purposes only.

Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.

Dosage and administration

adult (standard)IV infusion
Usual dose
1200mg every 3 weeks
Maximum
consult physician
Frequency
every 3 weeks
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
pediatric (standard)IV infusion
Usual dose
Not established for pediatric use
Maximum
consult physician
Frequency
N/A
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
geriatric (standard)IV infusion
Usual dose
1200mg every 3 weeks
Maximum
consult physician
Frequency
every 3 weeks
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard

Overdose information

Important overdose information
Toxic dose: Single dose significantly exceeding recommended 840-1200 mg that may cause severe immune-related adverse events
Chronic overdose: Prolonged immune activation leading to autoimmune complications across multiple organ systems
Immediate actions
Discontinue drug, initiate corticosteroid therapy, supportive care, monitor vital signs
Antidote
No specific antidote available(Management focuses on immunosuppression with corticosteroids and supportive care)
Poison Control: 1-800-222-1222

Special Populations

8 groups
✗

pregnancy

first trimester
unsafe
FDA Category
C
Dose Adjustment

avoid if possible

Key Recommendations

avoid use during pregnancy unless benefits outweigh risks to the fetus

Monitor

regular fetal monitoring and ultrasound assessments

Use of this medication in this population requires careful consideration of risks and benefits.

✗

pregnancy

second third trimester
unsafe
FDA Category
C
Dose Adjustment

avoid if possible

Key Recommendations

discontinue therapy if pregnancy occurs; consider risks versus benefits

Use of this medication in this population requires careful consideration of risks and benefits.

?

lactation

breastfeeding
unknown
FDA Category
N
Dose Adjustment

not recommended

Key Recommendations

discontinue breastfeeding during treatment and for at least 5 months after last dose

Monitor

no specific monitoring required

⚠

geriatric

elderly 65 and older
caution
FDA Category
N
Dose Adjustment

no specific adjustment

Key Recommendations

use with caution; no dose adjustment required but monitor for adverse effects

Monitor

regular assessment of organ function and immune-related adverse events

Use with caution and monitor for adverse effects.

?

pediatric_age

children under 18
unknown
FDA Category
N
Dose Adjustment

not established

Key Recommendations

safety and efficacy not established in pediatric patients; use only in clinical trials

Monitor

monitor growth and development if treatment necessary

✓

renal_impairment

mild moderate severe
safe
FDA Category
N
Dose Adjustment

no adjustment needed

Key Recommendations

no dose adjustment required for mild, moderate, or severe renal impairment

Monitor

routine monitoring of renal function

✓

hepatic_impairment

mild
safe
FDA Category
N
Dose Adjustment

no adjustment needed

Key Recommendations

no dose adjustment required for mild hepatic impairment

Monitor

routine liver function monitoring

⚠

hepatic_impairment

moderate severe
caution
FDA Category
N
Dose Adjustment

use with caution

Key Recommendations

use with caution; limited data in moderate to severe hepatic impairment; consider risks versus benefits

Monitor

close monitoring of liver function tests

Use with caution and monitor for adverse effects.

Statistics and clinical data

prescribingFDA
2023

FDA approval year

Value:2016

Initial FDA approval date for Atezolizumab (Tecentriq)

drug_classFDA
2023

Drug class

Value:PD-L1 inhibitor (Immunotherapy)

Atezolizumab is a programmed death-ligand 1 (PD-L1) blocking antibody

usageFDA
2023

Approved indications

Value:Urothelial carcinoma, NSCLC, small cell lung cancer, hepatocellular carcinoma, melanoma, colorectal cancer

Major approved therapeutic indications for Atezolizumab

administrationFDA
2023

Route of administration

Value:Intravenous infusion

Method of drug administration

Atezolizumab is FDA-approved for the treatment of urothelial carcinoma (bladder cancer), non-small cell lung cancer (NSCLC), triple-negative breast cancer (TNBC), small cell lung cancer (SCLC), and melanoma. It may be used alone or in combination with other cancer treatments depending on the specific cancer type and stage.

Atezolizumab is a monoclonal antibody that binds to PD-L1 protein, which may be expressed on tumor cells and tumor-infiltrating immune cells. By blocking PD-L1 from binding to PD-1 and B7.1 receptors on T cells and antigen-presenting cells, it removes the brake on the immune system, allowing T cells to recognize and destroy cancer cells.

Atezolizumab is administered by intravenous infusion. Common side effects include fatigue, decreased appetite, nausea, and immune-related adverse events. Patients should be monitored for immune-mediated reactions affecting the lungs, liver, colon, and endocrine glands. Treatment should be supervised by oncologists experienced in immunotherapy.

Contraindications

Conditions and patient states where this medication should be avoided or used with caution.

Do not use (1)

ABSOLUTEhypersensitivity

Known allergy to this medication or its components

Use caution (1)

RELATIVEpregnancy

Consult healthcare provider for benefits vs risks assessment

Official drug label

WellAlly may earn a referral fee from linked resources at no extra cost to you. Editorial content is never influenced by commercial relationships.

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed July 26, 2026. · Read our editorial policy