5 Heartbreaking Facts About Tristan Thompson's Brother Amari: Legal Guardianship, Epilepsy, And Khloé Kardashian's Role

The story of Tristan Thompson and his younger brother, Amari Thompson, has captured the public's attention for its profound display of family commitment and sacrifice. As of late December 2025, the NBA player has fully embraced the role of legal guardian to Amari, who lives with a severe and complex medical condition. This challenging journey began following the sudden and tragic death of their mother, Andrea Thompson, in January 2023, forcing Tristan to step up as the primary caregiver for his sibling.

While many search for information about "Tristan Thompson's son Amari," it is crucial to clarify that Amari is Tristan’s younger brother, not his son. The deep bond and protective role Tristan has taken on, however, certainly reflect a father-like devotion. The latest updates reveal the ongoing efforts to manage Amari's health and the surprising, yet vital, support system provided by Khloé Kardashian.

Tristan Thompson: NBA Career and Family Profile

Tristan Trevor James Thompson is a Canadian professional basketball player known for his strong rebounding and defensive capabilities, particularly during his time with the Cleveland Cavaliers.

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• Full Name: Tristan Trevor James Thompson
• Date of Birth: March 13, 1991
• Age (as of Dec 2025): 34
• Place of Birth: Toronto, Ontario, Canada
• Nationality: Canadian and American
• Height: 6 feet 9 inches (2.06 m)
• Position: Center / Power Forward
• NBA Draft: 4th overall pick in the 2011 NBA Draft by the Cleveland Cavaliers
• NBA Career Highlights: NBA Champion (2016) with the Cleveland Cavaliers.
• Family: Son of Trevor and Andrea Thompson (deceased). He has three brothers: Dishawn, Daniel, and Amari.
• Children: He has four children, including daughter True Thompson and son Tatum Thompson with Khloé Kardashian.

The Truth About Amari Thompson: Brother, Not Son

The relationship between Tristan and Amari is one of sibling love and intense caregiving, not father and son. Amari Thompson was born on July 27, 2006, making him 18 years old as of 2025.

Amari’s life has been defined by a severe, lifelong medical battle. He suffers from Lennox-Gastaut syndrome (LGS), a rare and debilitating form of epilepsy.

This condition causes frequent and multiple types of seizures, often leading to intellectual disability and developmental delays. Amari requires round-the-clock care and uses a wheelchair due to his physical limitations.

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The Thompson family's world changed in January 2023 when their mother, Andrea Thompson, passed away suddenly. Andrea had been Amari’s primary caregiver. Her death left the teenager without a present parent, prompting Tristan to immediately take over his brother’s care.

In a formal move to secure Amari’s future and medical needs, Tristan filed for legal guardianship. The Los Angeles County Superior Court officially granted Tristan sole legal guardianship of his younger brother, Amari, in a ruling that was finalized over a year after their mother's passing.

Khloé Kardashian’s Unexpected Caretaker Role and the LGS Challenge

One of the most significant and recent developments in this story, frequently highlighted in 2025 news reports, is the pivotal role Khloé Kardashian has taken on. After Andrea's passing, Tristan and Amari moved into Khloé’s home.

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Khloé, who shares two children—True and Tatum—with Tristan, has chosen to become Amari’s primary caretaker, providing a stable and supportive environment. This decision has been widely praised, demonstrating a deep level of compassion and commitment beyond her relationship with Tristan.

She has spoken candidly about the challenges of Amari's condition, including a scary incident where Amari suffered a seizure during his 18th birthday celebration.

The reality of caring for someone with Lennox-Gastaut syndrome is immense. LGS involves a triad of symptoms: multiple types of seizures, a characteristic EEG pattern, and impaired cognitive function.

Khloé’s choice to integrate Amari into her family life has provided essential emotional and logistical support, allowing Tristan to balance his demanding NBA career with his responsibilities as a legal guardian. Her involvement ensures Amari has continuous, dedicated care.

The Amari Thompson Fund and Epilepsy Awareness

Tristan Thompson’s commitment to his brother extends beyond his personal home. In honor of Amari, Tristan established the Amari Thompson Fund.

This fund is dedicated to raising awareness and providing support for families dealing with epilepsy, particularly the complex and challenging cases like Lennox-Gastaut syndrome.

Through this foundation, Tristan uses his public platform to shed light on a condition that requires extensive resources and understanding. The Amari Thompson Soiree, an event held in support of epilepsy, further highlights his dedication to this cause.

The Future for Amari and Tristan

As Amari Thompson recently turned 18, the legal guardianship remains a critical structure for his care. Tristan’s efforts to ensure his brother’s well-being—from securing legal guardianship to providing a stable home with the help of Khloé—underscore a powerful narrative of familial responsibility.

The ongoing coverage in 2025 continues to focus on this blended family dynamic and the immense care required to manage LGS. Tristan Thompson's commitment to his younger brother, Amari, stands as a testament to the strength of their bond, transforming a personal tragedy into a source of inspiration and advocacy for epilepsy awareness.

The entities central to this story—Tristan, Amari, Khloé Kardashian, Andrea Thompson, Lennox-Gastaut syndrome, and the Cleveland Cavaliers—are woven together in a complex, yet touching, chapter of their lives, continually setting a spotlight on the challenges of chronic illness and the power of family support.