In 2024, 12-year-old Kendric Cromeropens in new window made medical history as the first sickle cell patient to receive a revolutionary gene therapy that effectively cured what would have been a lifelong condition. Cromer’s therapy targeted the root cause of sickle cell disease (SCD): a genetic mutation that causes atypical hemoglobin and distorts red blood cells into a crescent or “sickle” shape. These rigid cells struggle to flow through small blood vessels, often clumping together and causing painful blockages called vaso-occlusive crises (see Sickle cell disease 101).
The treatment Cromer received, one of two approved by the Food and Drug Administration (Lyfgenia and CASGEVY), consisted of modifying his stem cells to produce normal red blood cells. The impact of this gene therapy could extend far beyond Cromer. For the estimated 100,000 Americans living with SCD, most of whom are of African descent, it promises liberation from a painful and often exhausting disorder that shortens life expectancy by an average of 20 yearsopens in new window.
“I didn’t think I would ever see the day,” said Sharee Turpin, a patient advocate for the pediatric hematology and oncology unit at the University of Rochester’s Medical Center, who lives with sickle cell. “It’s finally giving a glimpse of what life could be, figuring out who we are without this illness and the hurdles that it continuously puts in front of us.” Currently, gene therapy has a hefty price tag of more than $2.2 millionopens in new window, which is out of reach for most SCD patients.
Living with sickle cell disease creates significant challenges for a person’s mental health and quality of life. Psychologists are crucial for helping those living with SCD manage numerous neurocognitive, emotional, and psychosocial issues. These include depression, anxiety, poor sleep quality, and social isolation as they grapple with their condition (Essien, E. A., et al., Medicine, Vol. 102, No. 47, 2023opens in new window). Frequent vaso-occlusive crises disrupt daily life and can lead to missed work, school, and activities. Acute and chronic pain, which is common to SCD patients, takes a significant toll on their mental health.
People with SCD face a unique set of challenges at the intersection of race, poverty, and disability, placing them at heightened risk of inadequate mental and physical health care. Recent research shows that SCD coupled with socioeconomic hardship may accelerate cognitive aging. In a study of 200 young Black adults from St. Louis and the surrounding region, researchers found that participants with the disease had brains that appeared, on average, 14 years older than their actual age (Ford, A. L., et al., JAMA Network Open, Vol. 8, No. 1, 2025opens in new window).
Two of the most common aspects of the disease—chronic anemia and decreased oxygen supply—can increase the probability of strokes, which directly affect cognition. As a result, researchers have found that some who have SCD have “spatial and constructional deficits, attention and memory weaknesses, working memory issues, lower academic functioning, poor social skills, and abnormal executive functioning” (Braniecki, S., et al., Frontiers in Neurology, Vol. 15, 2024opens in new window). For children and teenagers, these symptoms can cause difficulties in the classroom and with building social skills, while adults may find it difficult to maintain steady employment or healthy relationships.


