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Course of cystic fibrosis in black patients
Insights
Black patients with cystic fibrosis often present with typical symptoms and a high rate of meconium ileus equivalent. However, survivors may experience less pulmonary disease morbidity, suggesting a good prognosis after infancy.
Area of Science:
- Medical Genetics
- Pulmonology
- Pediatrics
Background:
- Cystic Fibrosis (CF) is a genetic disorder affecting multiple organs.
- Historically, CF research has focused primarily on Caucasian populations.
- Understanding CF manifestations in diverse ethnic groups is crucial for equitable care.
Purpose of the Study:
- To describe the clinical characteristics and outcomes of Black patients with cystic fibrosis.
- To compare pulmonary morbidity in Black versus White patients with CF.
- To assess the long-term prognosis for Black individuals diagnosed with CF.
Main Methods:
- Retrospective case series analysis of 17 Black patients with cystic fibrosis.
- Review of clinical data including manifestations, complications, and treatment adherence.
- Comparison of pulmonary disease severity with a larger cohort of White CF patients.
Main Results:
- Observed typical CF manifestations (sweat gland, GI, pulmonary) with a high incidence (35%) of meconium ileus equivalent.
- Documented one childhood mortality due to complications and emotional issues impacting treatment.
- Found substantially lower pulmonary disease morbidity in Black patients compared to White patients, with only one severe case at age 28.
Conclusions:
- Black patients with cystic fibrosis exhibit characteristic symptoms, including a notable frequency of meconium ileus equivalent.
- Survivors of infancy in this cohort demonstrated reduced pulmonary disease burden compared to White counterparts.
- Black individuals with cystic fibrosis may have a favorable long-term prognosis if they survive early childhood.
Abstract:
Seventeen black patients showed typical sweat gland, gastrointestinal, and pulmonary manifestations of cystic fibrosis. There was an unusually high incidence of meconium ileus equivalent (35%). Three infant siblings of patients in this study had died of cystic fibrosis prior to referral of a family member to this center. One patient died at age four years after emotional problems interfered with the treatment program; status asthmaticus played a major role in his terminal respiratory failure. The remainder of the patients have had substantially less morbidity from pulmonary disease than a comparable, much larger group of white patients. Only one patient, age 28, who is married and employed full-time has severe pulmonary involvement as assessed by pulmonary function studies and chest roentgenogram. The 16 surviving patients have a mean age of 13 1/2 years after a mean follow-up period of 10 years. If black patients with cystic fibrosis survive infancy, they then, as a group, may have a relatively good prognosis.