Atezolizumab vs Tamoxifen

## Atezolizumab vs Tamoxifen: Overview

This comparison examines the pharmacological differences between **Atezolizumab** and **Tamoxifen**.

## Mechanism of Action

**Atezolizumab**: Fully human anti-PD-L1 IgG1 monoclonal antibody blocking PD-L1 interaction with PD-1 and B7.1.

**Tamoxifen**: Selective estrogen receptor modulator (SERM).

## Pharmacokinetics

**Half-life**: Atezolizumab — 27 days; Tamoxifen — 5-7 days.

## Chemical Properties

**Molecular Formula**: Atezolizumab — N/A; Tamoxifen — C26H29NO.

**Molecular Weight**: Atezolizumab — N/A; Tamoxifen — 371.5150 g/mol.

**Type**: Atezolizumab — Antibody; Tamoxifen — Small molecule.