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⛨ VEPDEGESTRANT - PROTAC DRUG APPROVED

 

🔆 VEPDEGESTRANT – World's First PROTAC Drug Approved

📌 Why in News?

The U.S. FDA has approved Vepdegestrant, the world's first PROTAC (Proteolysis-Targeting Chimera)-based drug, marking a major breakthrough in targeted cancer therapy.

📖 Key Highlights

🔹 What is Vepdegestrant?

  • World's first approved PROTAC-based drug.
  • Designed for targeted protein degradation rather than simply blocking disease-causing proteins.
  • Approved by the U.S. Food and Drug Administration (FDA).

🔹 Developed By

  • Arvinas Inc.
  • Pfizer

🔹 Indication

Used to treat:

  • ESR1-mutated
  • ER-positive (Estrogen Receptor Positive)
  • HER2-negative
  • Advanced or Metastatic Breast Cancer

⚙️ How Does It Work?

Unlike conventional drugs that block harmful proteins, Vepdegestrant uses PROTAC technology.

Working Mechanism

  • Identifies the disease-causing protein.
  • Recruits the cell's ubiquitin-proteasome system.
  • Tags the harmful protein for destruction.
  • The protein is completely degraded and removed from the cell.

👉 This allows repeated destruction of disease-causing proteins, making the drug more effective.

⭐ Key Features

  • ✅ World's first approved PROTAC drug
  • ✅ Oral, once-daily tablet
  • ✅ Catalytic action—one molecule can degrade multiple target proteins
  • ✅ Improved Progression-Free Survival (PFS) compared to Fulvestrant in Phase III clinical trials
  • ✅ Opens new possibilities for treating previously "undruggable" proteins

📚 Static GK Linkage

What is PROTAC?

PROTAC (Proteolysis-Targeting Chimera) is a technology that destroys unwanted proteins inside cells by utilizing the body's natural ubiquitin-proteasome system.

Ubiquitin-Proteasome System

  • Acts as the cell's protein recycling and waste disposal system.
  • Removes damaged, abnormal, or unnecessary proteins.

🧠 Memory Trick

PROTAC = PROtein TArgeted Cleaner

👉 PROTAC cleans away harmful proteins instead of merely blocking them.

🎯 TNPSC Prelims Facts

  • First approved PROTAC drug → Vepdegestrant
  • Approved by → U.S. FDA
  • Developed by → Arvinas Inc. & Pfizer
  • Used for → ESR1-mutated ER-positive HER2-negative advanced/metastatic breast cancer
  • Technology → Targeted Protein Degradation (PROTAC)

📝 PYQ Link

Topic: Biotechnology | Human Health & Diseases | Modern Drug Technologies

Questions related to biotechnology, cancer therapies, and protein degradation mechanisms are frequently asked in TNPSC Group I, Group II, and Group IV examinations.

🎯 AURA Quiz Zone

1. Vepdegestrant is the world's first approved drug based on which technology?

A) CRISPR
B) PROTAC
C) mRNA
D) Monoclonal Antibody

Answer: ✅ B

2. Vepdegestrant has been approved primarily for treating:

A) Lung Cancer
B) Blood Cancer
C) Breast Cancer
D) Liver Cancer

Answer: ✅ C

3. The PROTAC technology works by:

A) Blocking DNA replication
B) Destroying target proteins using the ubiquitin-proteasome system
C) Killing bacteria directly
D) Producing antibodies

Answer: ✅ B

4. Which companies jointly developed Vepdegestrant?

A) Moderna & BioNTech
B) Pfizer & Arvinas
C) Roche & Novartis
D) AstraZeneca & Merck

Answer: ✅ B

5. Vepdegestrant is administered as:

A) Injection
B) Vaccine
C) Oral once-daily tablet
D) Nasal Spray

Answer: ✅ C

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