Global Blood Therapeutics

Global Blood Therapeutics

Develops and sells sickle cell therapies

Overview

Global Blood Therapeutics develops and delivers treatments for sickle cell disease. Its core product, Oxbryta (voxelotor), is an oral medicine approved by the FDA for SCD patients as young as 4 years old, and the company conducts research, clinical trials, and regulatory work to bring new therapies to market. Oxbryta works by acting on hemoglobin to reduce red blood cell sickling, supporting healthier blood flow. The company differentiates itself through a focused, disease-specific portfolio and active patient advocacy, prioritizing SCD care and community engagement alongside its R&D efforts. Its goal is to change the treatment paradigm for SCD by expanding options, improving outcomes, and progressing toward additional therapies for patients and families affected by the disease.

About Global Blood Therapeutics

Simplify's Rating
Why Global Blood Therapeutics is rated
D-
Rated D+ on Competitive Edge
Rated D- on Growth Potential
Rated D- on Differentiation

Industries

Biotechnology

Healthcare

Company Size

51-200

Company Stage

Acquired

Total Funding

$208.7M

Headquarters

San Francisco, California

Founded

2011

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Simplify's Take

What believers are saying

  • Pfizer still controls GBT's sickle-cell IP, data, and development infrastructure.
  • Legacy asset osivelotor remained in phase 3 during 2025, extending optionality.
  • GBT's scientific team built deep sickle-cell relationships that Pfizer can redeploy elsewhere.

What critics are saying

  • Pfizer withdrew Oxbryta worldwide on September 25, 2024, destroying GBT's only approved revenue stream.
  • FDA linked Oxbryta to more vaso-occlusive crises and deaths, forcing all trials to stop.
  • 2026 lawsuits in Northern District of California target Pfizer and GBT; trial starts June 2027.

What makes Global Blood Therapeutics unique

  • GBT created Oxbryta, the first FDA-approved HbS polymerization inhibitor for sickle cell disease.
  • Pfizer acquired GBT in October 2022, preserving rare-hematology expertise and relationships.
  • Its legacy pipeline targeted both hemolysis and VOCs, spanning voxelotor and inclacumab.

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Funding

Total Funding

$208.7M

Above

Industry Average

Funded Over

4 Rounds

Acquisition funding comparison data is currently unavailable. We're working to provide this information soon!
Acquisition Funding Comparison
Coming Soon

Growth & Insights and Company News

Headcount

6 month growth

↓ -61%

1 year growth

↓ -61%

2 year growth

↓ -61%
Nasdaq
Jun 26th, 2026
Hot blooded: Global Blood Therapeutics prices IPO above the range at $20

Global Blood Therapeutics, an early-stage biotech developing a small molecule therapy for sickle cell disease, raised $120 million by offering 6.0. |

City A.M.
Aug 8th, 2022
Pfizer buys Global Blood Therapeutics for £4.4bn in Covid cash spending spree

Pfizer has bought Global Blood Therapeutics for $5.4bn (£4.4bn), as the US pharmaceutical giant continues its Covid-19 cash spending spree. The deal will

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