CSL Behring
Drugmaker with rare disease work · based in Melbourne, Australia · founded 1916 · ticker CSL · cslbehring.com
CSL Behring works on 17 rare diseases we track, including Acute Myeloid Leukemia, Alpha-1 Antitrypsin Deficiency and 15 more. It has 14 active clinical trials, and 13 are looking for volunteers now. It also has 11 FDA-approved rare disease drugs.
CSL Behring is a global leader in plasma-derived and recombinant therapies for rare diseases including bleeding disorders, immune deficiencies, and hereditary angioedema. Key products include Hemgenix (etranacogene dezaparvovec), the first gene therapy for hemophilia B, Idelvion (Factor IX) for hemophilia B, Haegarda (C1 esterase inhibitor) for hereditary angioedema, and Hizentra (subcutaneous immunoglobulin) for primary immunodeficiency and CIDP.
CSL Behring pipeline
Each row lists the diseases CSL Behring is studying at that stage, from the ones closest to approval down to the earliest work.
Andembry (garadacimab) · AFSTYLA Antihemophilic Factor (Recombinant), Single Chain (antihemophilic factor, human recombinant) · Berinert (human c1-esterase inhibitor) · HAEGARDA C1 Esterase Inhibitor Subcutaneous (Human) (human c1-esterase inhibitor) · Hemgenix (etranacogene dezaparvovec) · Hizentra (human immunoglobulin g) · Humate-P (antihemophilic factor/von willebrand factor complex (human)) · Idelvion (coagulation factor ix recombinant human) · Privigen (human immunoglobulin g) · Rhophylac (human rho(d) immune globulin) · 1 more
Hemophilia B 2 trials recruiting
Sickle Cell Disease 2 trials recruiting · Non-cystic Fibrosis Bronchiectasis recruiting · Eosinophilic Esophagitis recruiting
Alpha-1 Antitrypsin Deficiency recruiting · Chronic Inflammatory Demyelinating Polyneuropathy recruiting · Common Variable Immunodeficiency recruiting
Hemophilia B 2 trials recruiting · Hematologic Disorder recruiting · Hereditary Angioedema recruiting · Chronic Inflammatory Demyelinating Polyneuropathy recruiting
CSL Behring clinical trials
These are CSL Behring trials for the rare diseases we track, from ClinicalTrials.gov. Statuses there can lag behind company news, so confirm with the study team before you plan around one.
13 trials looking for volunteers now
Safety of Anumigilimab (CSL324) in Adults With Sickle Cell Disease (SCD)
Tests Anumigilimab, Placebo
Phase 3, Open-label, Single-dose Study of CSL222 in Adolescent Male Subjects (≥ 12 to < 18 Years of Age) With Severe or Moderately Severe Hemophilia B
Tests CSL222 (Adeno-associated viral vector serotype 5 [AAV5]-hFIXco-Padua)
For Hemophilia B
Dose Range Finding, Efficacy, and Safety Study of Nebulized CSL787 in Adults With Non-cystic Fibrosis Bronchiectasis (NCFB)
Tests CSL787, Placebo, Nebulizer
For Non-cystic Fibrosis Bronchiectasis
Phase 4, Double-blind Study Evaluating the Response on Computed Tomography (CT) Lung Density Decline Rates of Respreeza / Zemaira Weekly for 3 Years in Adults With alpha1 Antitrypsin Deficiency (AATD)
Tests CE1226
For Alpha1 Antitrypsin Deficiency, Alpha1-Proteinase Inhibitor Deficiency and Emphysema
Safety, Efficacy, and Pharmacokinetics of CSL889 in Adults and Adolescents With Sickle Cell Disease During Vaso-Occlusive Crisis
Tests CSL889, Placebo
For Sickle Cell Disease Vaso-occlusive Crisis
Efficacy and Safety of CSL222 (Etranacogene Dezaparvovec) Gene Therapy in Adults With Hemophilia B With Pretreatment Adeno-associated Virus Serotype 5 (AAV5) Neutralizing Antibodies (Nabs)
Tests CSL222 (AAV5-hFIXco-Padua)
For Hemophilia B
ATHN Transcends: A Natural History Study of Non-Neoplastic Hematologic Disorders
For Hematologic Disorder, Bleeding Disorder, Connective Tissue Disorder, Hemophilia and Thrombosis
A Study Investigating the Effectiveness and Safety of Garadacimab for Treating Patients With Hereditary Angioedema (HAE)
Tests No intervention
Pick a condition. One email when a new trial opens, a trial changes or the FDA decides, from any company, not only CSL Behring. Unsubscribe anytime.
- Trial Alerts, when a new trial opens or a trial changes
- Disease Updates, FDA decisions and condition news, usually 1 or 2 emails a month
FDA-approved drugs from CSL Behring
From the openFDA database. Tap a drug for side effects, dosing and help paying.
Andembry garadacimab
For Hereditary Angioedema. Approved Jun 16, 2025. Taken by subcutaneous route.
AFSTYLA Antihemophilic Factor (Recombinant), Single Chain antihemophilic factor, human recombinant
For Hemophilia A.
Berinert human c1-esterase inhibitor
HAEGARDA C1 Esterase Inhibitor Subcutaneous (Human) human c1-esterase inhibitor
Hemgenix etranacogene dezaparvovec
For Hemophilia B.
Hizentra human immunoglobulin g
For Chronic Inflammatory Demyelinating Polyneuropathy, Common Variable Immunodeficiency and Wiskott-Aldrich Syndrome. Taken by subcutaneous route.
Humate-P antihemophilic factor/von willebrand factor complex (human)
For Hemophilia A and Von Willebrand Disease.
Idelvion coagulation factor ix recombinant human
For Hemophilia B.
More about CSL Behring
CSL Behring is part of CSL Limited, which also acquired Vifor Pharma in 2022 to expand into nephrology and iron deficiency.
Where CSL Behring trials take place
The trials above run at 309 study sites in 26 countries. Tap a country to see its states, cities and hospitals.
Rare diseases CSL Behring works on
Each disease page lists every open trial, not only CSL Behring's, plus approved treatments.
Acute myeloid leukemia (AML) is a fast-growing cancer of the bone marrow in which immature white blood cells called blasts crowd out normal blood cells, causing fatigue, infections and bleeding...
How common: The National Cancer Institute's SEER program estimates 22,720 new US cases and 11,500 deaths in 2026, about 1.1% of new cancers, and 83,311 people were living with AML in 2023
Alpha-1 Antitrypsin Deficiency
Alpha-1 antitrypsin deficiency is a genetic disorder affecting the lungs and liver, caused by insufficient production of the protective protein alpha-1 antitrypsin.
How common: 1 in 1,500 to 3,500 people of European ancestry; about 100,000 people in the U.S
Ataxia-telangiectasia (A-T) is a rare inherited disorder in which the ATM gene, which coordinates DNA repair, does not work.
How common: 1 in 40,000 to 100,000 people worldwide
Chronic Inflammatory Demyelinating Polyneuropathy
Chronic Inflammatory Demyelinating Polyneuropathy (CIDP) is an autoimmune disorder affecting the peripheral nerves, causing progressive weakness and impaired function in the legs and arms.
How common: About 2.8 per 100,000 people in a 2019 pooled analysis of 9 studies (Broers et al., Neuroepidemiology); NORD estimates 5 to 7 per 100,000, and NIH's GARD estimates about 50,000 people in the U.S
Common Variable Immunodeficiency
Common variable immunodeficiency is a primary immunodeficiency disorder characterized by low levels of immunoglobulins and impaired antibody responses.
How common: 1 in 25,000 to 50,000 people
Cystic fibrosis is an autosomal recessive genetic disorder affecting the CFTR protein, which normally regulates chloride transport.
How common: Nearly 40,000 children and adults in the U.S.; 1 in 2,500 to 3,500 births among Caucasians
Dermatomyositis is a rare autoimmune inflammatory disease causing muscle weakness and distinctive skin rashes, particularly over joints.
How common: About 9.6 new cases per million people a year, according to NORD; juvenile-onset incidence about 0.4 cases per 100,000 children
Eosinophilic Esophagitis is a rare allergic/immune-mediated inflammatory disease of the esophagus characterized by eosinophil infiltration causing progressive narrowing and dysfunction.
How common: About 142.5 per 100,000 people in the United States, about 1 in 700 or an estimated 472,380 people, in a 2025 insurance claims study (Thel et al., Clin Gastroenterol Hepatol 2025)
Where to get support
Patient groups can explain a diagnosis, point you to specialists and tell you about trials before they open. CSL Behring's own site is cslbehring.com, and our help paying for treatment page lists drugmaker programs and charity funds.
- NIH GARD - Alpha-1 Antitrypsin DeficiencyAlpha-1 Antitrypsin Deficiency and Common Variable Immunodeficiency and 7 more
- National Bleeding Disorders FoundationHemophilia A and Hemophilia B
- NCI SEER Cancer Stat Facts: Acute Myeloid LeukemiaAcute Myeloid Leukemia
- NCI PDQ: Acute Myeloid Leukemia Treatment, patient versionAcute Myeloid Leukemia
- The Alpha-1 FoundationAlpha-1 Antitrypsin Deficiency
- MedlinePlus Genetics (NIH) - Ataxia-telangiectasiaAtaxia-Telangiectasia
- GeneReviews - Ataxia-TelangiectasiaAtaxia-Telangiectasia
- GBS|CIDP Foundation InternationalChronic Inflammatory Demyelinating Polyneuropathy