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Teen swimmer overcomes rare genetic disorder to pursue aquatic dreams

Despite living with PTPS deficiency, a rare genetic condition affecting brain chemistry, Jessica Quek has not let low muscle tone hinder her passion for swimming. The determined teenager continues to train and compete in the water.

LSN Singapore · 24 October 2026

Teen swimmer overcomes rare genetic disorder to pursue aquatic dreams

Jessica Quek was born with PTPS deficiency, an uncommon genetic disorder that impairs the production of essential neurotransmitters in the brain. The condition typically results in reduced muscle tone and developmental challenges that could discourage most from pursuing athletic endeavours.

Yet Quek has refused to allow her diagnosis to sideline her love of swimming. Despite the physical limitations imposed by her condition, the teenager has committed herself to regular training and competition in the pool.

Her determination has not gone unnoticed within Singapore's swimming community, where she represents the resilience of young athletes facing medical obstacles. Quek's story highlights how passion and perseverance can help individuals transcend the constraints of rare medical conditions.

PTPS deficiency remains poorly understood, with only a small number of cases documented globally. Medical professionals have noted that conditions affecting neurotransmitter production can significantly impact motor control and muscle development, making Quek's athletic achievements particularly noteworthy.