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Viljem Julijan Association for Children with Rare Diseases

Cure for Cockayne Syndrome type B – Viljem Julijan Association
Karolina, a young girl with Cockayne syndrome type B, holding her doll next to an illustration of a DNA strand in a capsule

Viljem Julijan Association for Children with Rare Diseases

Cure for children with Cockayne syndrome type B

We are on a mission to help develop gene therapy for Cockayne syndrome – type B (CSB, mutation in the gene ERCC6) — a devastating and deadly rare genetic disease. There is no treatment for it today; this research is the route to one.

Fundraising goal reached

€2.1 million

raised — the €2 million goal was reached

Thank you to every donor. The money now funds the research.

The campaign

Slovenia raised the money in two years

The nationwide campaign for Karolina closed in March 2025 with a sold-out charity concert in Ljubljana and a final total of €2,102,197. Every euro now funds the development of gene therapy for Cockayne syndrome type B.

The disease

Cockayne syndrome type B

Cockayne syndrome is a very rare and complex genetic disorder that affects multiple organ systems and has a fatal outcome. The underlying cause of type B is a mutation in the ERCC6 gene, which disrupts the cell’s DNA repair mechanisms, giving rise to symptoms that resemble premature aging.

At the Viljem Julijan Association for Children with Rare Diseases we are on a mission to develop gene therapy for Cockayne syndrome type B, and we are raising funds to support research and development of that therapy. Our mission was initiated by 7-year-old girl Karolina, who has Cockayne syndrome – type B; together with her parents we wish to save her life. We have partnered with two research groups in the USA and Portugal, which are developing gene therapy for CSB.

Read the full guide to Cockayne syndrome
Karolina, a girl with Cockayne syndrome type B, next to an illustration of a DNA double helix

Key facts about Cockayne syndrome type B

ERCC6
The gene mutated in Cockayne syndrome type B (CSB protein)
Autosomal recessive
Both parents are carriers; each pregnancy carries a 25% risk
No cure
Care today is supportive; no disease-modifying treatment exists
€2.1 million
Raised so far for gene therapy research

Research

Watch and listen to our research team

We have partnered with two research groups — in Portugal and in the USA — that are working on gene therapy for Cockayne syndrome type B.

Play video: Dr. Christina Pacak, Cure for Cockayne syndrome – type B
Dr. Christina Pacak, Cure for Cockayne syndrome – type B
Play video: Dr. Clévio Nóbrega, Cure for Cockayne syndrome – type B
Dr. Clévio Nóbrega, Cure for Cockayne syndrome – type B

Our research teams

  • Dr. Clévio Nóbrega, Algarve Biomedical Center Research Institute (ABC-RI), Portugal – Cockayne syndrome type B gene therapy researcher

    Dr. Clévio Nóbrega

    Algarve Biomedical Center Research Institute (ABC-RI), Portugal

  • Dr. Christina Pacak, Medical School, University of Minnesota, USA – Cockayne syndrome type B gene therapy researcher

    Dr. Christina Pacak

    Medical School, University of Minnesota, USA

  • Prof. Peter Kang, MD, Medical School, University of Minnesota, USA – Cockayne syndrome type B gene therapy researcher

    Prof. Peter Kang, MD

    Medical School, University of Minnesota, USA

How the research works

News

Milestones on the way to a treatment

All news

Has your child or loved one been diagnosed with Cockayne syndrome – type B?

Register as a patient

Karolina’s story

Karolina’s heartfelt story with Cockayne syndrome type B, entrusted to us by her parents Borut and Sabina

“Our daughter Karolina has been diagnosed with a devastating and deadly rare genetic disease called Cockayne syndrome – type B. This disease causes severe growth failure, neurological deterioration and premature aging. There is no cure and most children with this condition do not survive beyond their teens.

We are desperate to find a way to save our precious girl and give her a chance at a normal life. That is why we have launched this website to raise funds for research and treatment of Cockayne syndrome. We believe that with your generous support, we can make a difference for Karolina and other children like her who are suffering from this terrible disease.

Please consider making a donation today and sharing this website with your family and friends. Every euro counts and every gesture of kindness matters. Together, we can give hope to Karolina and show her that she is not alone in this fight. Thank you for your compassion and generosity.”

Karolina, a young girl with Cockayne syndrome type B
Karolina, a child living with Cockayne syndrome type B
Karolina playing with her toys at home
Karolina as a baby, before the Cockayne syndrome diagnosis
Karolina, a happy and emotional little girl
Happy and emotional little girl
Karolina with Ari, her best friend dog
Karolina’s best friend, the dog Ari
Karolina with her family
Karolina’s family

Frequently asked questions

What is Cockayne syndrome type B?

Cockayne syndrome type B (CSB) is a rare genetic disorder caused by mutations in the ERCC6 gene, which disrupts the cell’s DNA repair machinery. It is progressively devastating: children have severe growth failure, neurological deterioration and features that resemble premature aging. Read our full guide to Cockayne syndrome.

Is there a cure for Cockayne syndrome?

No. Today there is no cure and no disease-modifying treatment; care is supportive and symptomatic. That is exactly why we fund the development of gene therapy for Cockayne syndrome type B.

Who is Karolina?

Karolina is a girl from Slovenia with Cockayne syndrome type B. Her diagnosis started this mission: together with her parents, the Viljem Julijan Association is raising funds so that a gene therapy can be developed for her and for other children with CSB.

How can I help?

You can donate by PayPal or bank transfer, share this website with your family and friends, or — if your child or loved one has been diagnosed — join the patient registry.

Where does the money go?

Donations support research and development of gene therapy for CSB carried out by our partner research groups at the Algarve Biomedical Center Research Institute in Portugal and the University of Minnesota Medical School in the USA.

Other Cockayne syndrome organizations

Families are stronger together. These organizations also support research and families living with Cockayne syndrome.

Help us save the lives of children with Cockayne syndrome type B

Every donation supports research and development of gene therapy for this devastating and deadly rare genetic disease.