Diagnosed with the rare genetic condition Fanconi Anaemia, nine-year-old Calvin Jonker faces medical challenges with a fighting spirit and hope for a healthier future.
South Africa (21 January 2026) – At just nine years old, Calvin Jonker is already showing courage that inspires everyone around him. Kelvin’s mother, Jana Jonker, says her son might be the smallest of his peers, but he doesn’t let obstacles hold him back.
“It doesn’t matter what’s in front of him, he always tries his best. Even when he knows it will be difficult, he never stands back. That bravery is truly beautiful.”
Calvin was diagnosed with Fanconi Anaemia (FA) in 2025, a rare genetic condition that affects the body’s ability to repair DNA and significantly increases the risk of developing cancer at a young age. The disease has already caused progressive bone marrow failure, and the only curative treatment for Calvin is a life-saving stem cell transplant.
Since receiving the diagnosis, the Jonker family has faced ups and downs, juggling hope with the realities of medical challenges.
“It’s been a journey with many highs and lows. Last week, we found out we have another donor, which is exciting. But financially, it’s still very difficult.”
Despite the challenges, there is hope. Calvin has been matched with five potential stem cell donors through DKMS, with two already willing to help.
“I can’t explain the feeling of knowing he has donors willing to give him a second chance.”
Known for his love of gaming and karate, Calvin’s fighting spirit shines even as he adapts to new limitations.
“He can’t do physical activities anymore because of the risks, but his determination is still there.”
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“In today’s world, we need to stand by one another, even if we’re not family. Together, we can make a difference.”
If you wish to support the Jonker family and help Calvin on his journey, you can follow the link here.
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