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Diseases

Cystic fibrosis

OVERVIEW

  • Highlights & Basics
  • Images

DIAGNOSIS

  • Diagnostic Approach
  • Risk Factors
  • History & Exam
  • Tests
  • Differential Diagnosis
  • Criteria
  • Screening

TREATMENT

  • Tx Approach
  • Tx Options
  • Emerging Tx
  • Prevention

FOLLOW-UP

  • Overview
  • Complications

REFERENCES

  • Citations
  • Guidelines
  • Credits

PATIENT RESOURCES

  • Patient Instructions

Highlights & Basics

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Key Highlights
  • Cystic fibrosis (CF) is a genetic multisystem disease associated with abnormalities in salt and water transport across epithelial surfaces. Cystic fibrosis transmembrane conductance regulator (CFTR) gene variants are considered responsible for most disease.

  • Carrier screening can help those at risk make informed decisions about pregnancy, while newborn screening can ensure prompt diagnosis and treatment. A positive sweat test is diagnostic; genetic testing is performed in addition to the sweat test.

  • CFTR modulators are now a central component of care for most patients, improving many clinical outcomes by partially restoring CFTR function.

  • Respiratory disease is treated with augmented airway clearance, antibiotics, and mucus thinners.

  • Gastrointestinal disease is primarily treated with supplemental pancreatic enzymes, a high-calorie diet, and fat-soluble vitamins to support growth and nutrition. Some patients will require treatment for gastroesophageal reflux and liver disease.

Quick Reference

  • History & Exam

    • Key Factors

      • Other Factors

        More information...
      • Diagnostics Tests

          More information...
        • Treatment Options

            More information...

          Definition

          Epidemiology

          Etiology

          Pathophysiology

          content by BMJ Group
          Last updated

          Images

          • ​Cystic fibrosis transmembrane conductance regulator (CFTR) gene variants are classified into minima

            ​Cystic fibrosis transmembrane conductance regulator (CFTR) gene variants are classified into minimal function (class I-II), residual function (class IV-VI), and gating variants (Class III; may respond to a potentiator such as ivacaftor). The schematic shows the amount of CFTR protein in the cell membrane. Impact on function is illustrated by arrows showing the movement of chloride ions (Cl-) out of the cell (solid, dashed, and no arrows indicate normal, reduced, and no Cl- flow, respectively). In practice, some variants may straddle a number of classes

          • Finger clubbing

            Finger clubbing

          • ​CT--Coronal view of the paranasal sinuses showing the blockage of the osteomeatal complexes (Green

            ​CT--Coronal view of the paranasal sinuses showing the blockage of the osteomeatal complexes (Green Circle)

          • ​Pale-color soft tissue mass in the right nasal cavity

            ​Pale-color soft tissue mass in the right nasal cavity

          Citations

            Key Articles

            • Farrell PM, White TB, Ren CL, et al. Diagnosis of cystic fibrosis: consensus guidelines from the Cystic Fibrosis Foundation. J Pediatr. 2017 Feb;181S:S4-15.e1.[Abstract][Full Text]

            • Mogayzel PJ Jr, Naureckas ET, Robinson KA, et al; Pulmonary Clinical Practice Guidelines Committee. Cystic fibrosis pulmonary guidelines. Chronic medications for maintenance of lung health. Am J Respir Crit Care Med. 2013 Apr 1;187(7):680-9.[Abstract][Full Text]

            • Flume PA, Robinson KA, O'Sullivan BP, et al; Clinical Practice Guidelines for Pulmonary Therapies Committee. Cystic fibrosis pulmonary guidelines: airway clearance therapies. Respir Care. 2009 Apr;54(4):522-37.[Abstract][Full Text]

            • Kapnadak SG, Dimango E, Hadjiliadis D, et al. Cystic Fibrosis Foundation consensus guidelines for the care of individuals with advanced cystic fibrosis lung disease. J Cyst Fibros. 2020 May;19(3):344-54.[Abstract][Full Text]

            • Ramos KJ, Smith PJ, McKone EF, et al; CF Lung Transplant Referral Guidelines Committee. Lung transplant referral for individuals with cystic fibrosis: Cystic Fibrosis Foundation consensus guidelines. J Cyst Fibros. 2019 May;18(3):321-33.[Abstract][Full Text]

            Other Online Resources

            • ​Clinical and Functional Translation of CFTR (CFTR2)
            • Cystic Fibrosis Foundation: nutritional basics​
            • ​Cystic Fibrosis Foundation: consider tube feeding
            • Cystic Fibrosis Trust (UK): diet and nutrition leaflets
            • Cystic Fibrosis Foundation: drug development pipeline
            • ​The Cystic Fibrosis Center at Stanford
            • ​Cystic Fibrosis Foundation: a teacher's guide to cystic fibrosis
            • ​Cystic Fibrosis Trust (UK): cystic fibrosis for teachers
            • ​CDC: healthcare professionals - adult immunization schedule by age
            • ​CDC: healthcare professionals - child and adolescent immunization schedule by age
            • Cystic Fibrosis Foundation: managing CF - Pseudomonas​

            Referenced Articles

            • 1. Heneghan M, Southern KW, Murphy J, et al. Corrector therapies (with or without potentiators) for people with cystic fibrosis with class II CFTR gene variants (most commonly F508del). Cochrane Database Syst Rev. 2023 Nov 20;(11):CD010966.[Abstract][Full Text]

            • 2. Grasemann H, Ratjen F. Cystic fibrosis. N Engl J Med. 2023 Nov 2;389(18):1693-707.[Abstract]

            • 3. Orenstein DM, Rosenstein BJ, Stern RC. Cystic fibrosis: medical care. Philadelphia, PA: Lippincott Williams & Wilkins; 2000:365.

            • 4. Centers for Disease Control and Prevention. Cystic fibrosis: about cystic fibrosis. May 2024 [internet publication].[Full Text]

            • 5. Cystic Fibrosis Foundation. 2024 patient registry annual data report. Bethesda, MD: Cystic Fibrosis Foundation; 2025.[Full Text]

            • 6. Scotet V, Gutierrez H, Farrell PM. Newborn screening for CF across the globe - where is it worthwhile? Int J Neonatal Screen. 2020 Mar;6(1):18.[Abstract][Full Text]

            • 7. Southern KW, Munck A, Pollitt R, et al; ECFS CF Neonatal Screening Working Group. A survey of newborn screening for cystic fibrosis in Europe. J Cyst Fibros. 2007 Jan;6(1):57-65.[Abstract][Full Text]

            • 8. Stephenson AL, Swaleh S, Sykes J, et al. Contemporary cystic fibrosis incidence rates in Canada and the United States. J Cyst Fibros. 2023 May;22(3):443-9.[Abstract][Full Text]

            • 9. Hale JE, Parad RB, Comeau AM. Newborn screening showing decreasing incidence of cystic fibrosis. N Engl J Med. 2008 Feb 28;358(9):973-4.[Abstract]

            • 10. Scotet V, L'Hostis C, Férec C. The changing epidemiology of cystic fibrosis: incidence, survival and impact of the CFTR gene discovery. Genes (Basel). 2020 May 26;11(6):589.[Abstract][Full Text]

            • 11. Castellani C, Picci L, Tamanini A, et al. Association between carrier screening and incidence of cystic fibrosis. JAMA. 2009 Dec 16;302(23):2573-9.[Abstract][Full Text]

            • 12. Castellani C, Massie J. Newborn screening and carrier screening for cystic fibrosis: alternative or complementary? Eur Respir J. 2014 Jan;43(1):20-3.[Abstract][Full Text]

            • 13. Tarran R, Button B, Picher M, et al. Normal and cystic fibrosis airway surface liquid homeostasis. The effects of phasic shear stress and viral infections. J Biol Chem. 2005 Oct 21;280(42):35751-9.[Abstract][Full Text]

            • 14. Moskwa P, Lorentzen D, Excoffon KJ, et al. A novel host defense system of airways is defective in cystic fibrosis. Am J Respir Crit Care Med. 2007 Jan 15;175(2):174-83.[Abstract][Full Text]

            • 15. Matsui H, Grubb BR, Tarran R, et al. Evidence for periciliary liquid layer depletion, not abnormal ion composition, in the pathogenesis of cystic fibrosis airways disease. Cell. 1998 Dec 23;95(7):1005-15.[Abstract]

            • 16. Knowles MR, Stutts MJ, Spock A, et al. Abnormal ion permeation through cystic fibrosis respiratory epithelium. Science. 1983 Sep 9;221(4615):1067-70.[Abstract]

            • 17. Knowles M, Gatzy J, Boucher R. Increased bioelectric potential difference across respiratory epithelia in cystic fibrosis. N Engl J Med. 1981 Dec 17;305(25):1489-95.[Abstract]

            • 18. Joo NS, Irokawa T, Robbins RC, et al. Hyposecretion, not hyperabsorption, is the basic defect of cystic fibrosis airway glands. J Biol Chem. 2006 Mar 17;281(11):7392-8.[Abstract][Full Text]

            • 19. Conner GE, Wijkstrom-Frei C, Randell SH, et al. The lactoperoxidase system links anion transport to host defense in cystic fibrosis. FEBS Lett. 2007 Jan 23;581(2):271-8.[Abstract][Full Text]

            • 20. Boucher RC. New concepts of the pathogenesis of cystic fibrosis lung disease. Eur Respir J. 2004 Jan;23(1):146-58.[Abstract][Full Text]

            • 21. Bals R, Weiner DJ, Meegalla RL, et al. Salt-independent abnormality of antimicrobial activity in cystic fibrosis airway surface fluid. Am J Respir Cell Mol Biol. 2001 Jul;25(1):21-5.[Abstract][Full Text]

            • 22. Ballard ST, Trout L, Mehta A, et al. Liquid secretion inhibitors reduce mucociliary transport in glandular airways. Am J Physiol Lung Cell Mol Physiol. 2002 Aug;283(2):L329-35.[Abstract][Full Text]

            • 23. Massie J, Delatycki MB. Cystic fibrosis carrier screening. Paediatr Respir Rev. 2013 Dec;14(4):270-5.[Abstract]

            • 24. Farrell PM, White TB, Ren CL, et al. Diagnosis of cystic fibrosis: consensus guidelines from the Cystic Fibrosis Foundation. J Pediatr. 2017 Feb;181S:S4-15.e1.[Abstract][Full Text]

            • 25. Comeau AM, Accurso FJ, White TB, et al. Guidelines for implementation of cystic fibrosis newborn screening programs: Cystic Fibrosis Foundation workshop report. Pediatrics. 2007 Feb;119(2):e495-518.[Abstract]

            • 26. Castellani C, Simmonds NJ, Barben J, et al. Standards for the care of people with cystic fibrosis (CF): a timely and accurate diagnosis. J Cyst Fibros. 2023 Nov;22(6):963-8.[Abstract][Full Text]

            • 27. Watson MS, Cutting GR, Desnick RJ, et al. Cystic fibrosis population carrier screening: 2004 revision of American College of Medical Genetics mutation panel. Genet Med. 2004 Sep-Oct;6(5):387-91.[Abstract][Full Text]

            • 28. American College of Medical Genetics. Standards and guidelines for clinical genetics laboratories, 2008 edition. Technical standards and guidelines for CFTR mutation testing. Mar 2011 [internet publication].​[Full Text]

            • 29. Gregg AR, Aarabi M, Klugman S, et al; ACMG Professional Practice and Guidelines Committee. Screening for autosomal recessive and X-linked conditions during pregnancy and preconception: a practice resource of the American College of Medical Genetics and Genomics (ACMG). Genet Med. 2021 Oct;23(10):1793-806.[Abstract][Full Text]

            • 30. American College of Obstetricians and Gynecologists. Committee opinion no. 691: carrier screening for genetic conditions. Mar 2017 [internet publication].[Abstract][Full Text]

            • 31. Whitcomb DC, Buchner AM, Forsmark CE. AGA clinical practice update on the epidemiology, evaluation, and management of exocrine pancreatic insufficiency: expert review. Gastroenterology. 2023 Nov;165(5):1292-301.[Abstract][Full Text]

            • 32. Berke G, Gede N, Szadai L, et al. Bicarbonate defective CFTR variants increase risk for chronic pancreatitis: a meta-analysis. PLoS One. 2022;17(10):e0276397.[Abstract][Full Text]

            • 33. Wilschanski M, Munck A, Carrion E, et al. ESPEN-ESPGHAN-ECFS guideline on nutrition care for cystic fibrosis. Clin Nutr. 2024 Feb;43(2):413-45.[Abstract][Full Text]

            • 34. Coffey MJ, Whitaker V, Gentin N, et al. Differences in outcomes between early and late diagnosis of cystic fibrosis in the newborn screening era. J Pediatr. 2017 Feb;181:137-45.e1.[Abstract]

            • 35. Loukou I, Moustaki M, Douros K. Children with cystic fibrosis are still receiving inconclusive diagnosis despite undergoing newborn screening. Acta Paediatr. 2023 Oct;112(10):2039-44.[Abstract][Full Text]

            • 36. Terlizzi V, Manti S, D'Amico F, et al. Biochemical and genetic tools to predict the progression to cystic fibrosis in CRMS/CFSPID subjects: a systematic review. Paediatr Respir Rev. 2024 Sep;51:46-55.[Abstract][Full Text]

            • 37. American College of Medical Genetics and Genomics. Five things physicians and patients should question. Choosing Wisely, an initiative of the ABIM Foundation. 2021 [internet publication]. ​[Full Text]

            • 38. Southern KW, Castellani C, Lammertyn E, et al. Standards of care for CFTR variant-specific therapy (including modulators) for people with cystic fibrosis. J Cyst Fibros. 2023 Jan;22(1):17-30.[Abstract][Full Text]

            • 39. Castellani C, Duff AJA, Bell SC, et al. ECFS best practice guidelines: the 2018 revision. J Cyst Fibros. 2018 Mar;17(2):153-78.[Abstract][Full Text]

            • 40. Miller JM, Binnicker MJ, Campbell S, et al. Guide to utilization of the microbiology laboratory for diagnosis of infectious diseases: 2024 update by the Infectious Diseases Society of America (IDSA) and the American Society for Microbiology (ASM). Clin Infect Dis. 2024 Mar 5:ciae104.[Abstract][Full Text]

            • 41. Eigen H, Rosenstein BJ, FitzSimmons S, et al. A multicenter study of alternate-day prednisone therapy in patients with cystic fibrosis. Cystic Fibrosis Foundation Prednisone Trial Group. J Pediatr. 1995 Apr;126(4):515-23.[Abstract]

            • 42. Yule A, Sills D, Smith S, et al. Thinking outside the box: a review of gastrointestinal symptoms and complications in cystic fibrosis. Expert Rev Respir Med. 2023 Jul-Dec;17(7):547-61.[Abstract][Full Text]

            • 43. Pauwels A, Blondeau K, Dupont LJ, et al. Mechanisms of increased gastroesophageal reflux in patients with cystic fibrosis. Am J Gastroenterol. 2012 Sep;107(9):1346-53.[Abstract]

            • 44. Abu-El-Haija M, Uc A, Werlin SL, et al. Nutritional considerations in pediatric pancreatitis: a position paper from the NASPGHAN Pancreas Committee and ESPGHAN Cystic Fibrosis/Pancreas Working Group. J Pediatr Gastroenterol Nutr. 2018 Jul;67(1):131-43.[Abstract][Full Text]

            • 45. Seidler D, Griffin M, Nymon A, et al. Throat swabs and sputum culture as predictors of P. aeruginosa or S. aureus lung colonization in adult cystic fibrosis patients. PLoS One. 2016;11(10):e0164232.[Abstract][Full Text]

            • 46. Bilton D, Canny G, Conway S, et al. Pulmonary exacerbation: towards a definition for use in clinical trials. Report from the EuroCareCF Working Group on outcome parameters in clinical trials. J Cyst Fibros. 2011 Jun;10 Suppl 2:S79-81.[Abstract][Full Text]

            • 47. Stanford GE, Dave K, Simmonds NJ. Pulmonary exacerbations in adults with cystic fibrosis: a grown-up issue in a changing cystic fibrosis landscape. Chest. 2021 Jan;159(1):93-102.[Abstract][Full Text]

            • 48. Almulhem M, Ward C, Haq I, et al. Definitions of pulmonary exacerbation in people with cystic fibrosis: a scoping review. BMJ Open Respir Res. 2024 Aug 15;11(1):e002456.[Abstract][Full Text]

            • 49. Naseem R, Howe N, Williams CJ, et al. What diagnostic tests are available for respiratory infections or pulmonary exacerbations in cystic fibrosis: a scoping literature review. Respir Investig. 2024 Sep;62(5):817-31.[Abstract][Full Text]

            • 50. Flume PA, Mogayzel PJ Jr, Robinson KA, et al; Clinical Practice Guidelines for Pulmonary Therapies Committee. Cystic fibrosis pulmonary guidelines: treatment of pulmonary exacerbations. Am J Respir Crit Care Med. 2009 Nov 1;180(9):802-8.[Abstract][Full Text]

            • 51. Perrem L, Martin I, Ratjen F. Outpatient management of pulmonary exacerbations in children with cystic fibrosis. Expert Rev Respir Med. 2023 Apr;17(4):295-304.[Abstract]

            • 52. Hopkins MK, Dugoff L, Kuller JA. Guidelines for cystic fibrosis carrier screening in the prenatal/preconception period. Obstet Gynecol Surv. 2022 Oct;77(10):606-10.[Abstract]

            • 53. Banzi R, Allocati E, Gerardi C, et al. Effectiveness of preconceptional and prenatal cystic fibrosis carrier screening: a systematic review. Epidemiol Prev. 2023 Jul-Oct;47(4-5):243-56.[Abstract]

            • 54. American College of Obstetricians and Gynecologists. Committee opinion no. 690: carrier screening in the age of genomic medicine. Mar 2017 [internet publication].[Full Text]

            • 55. Castellani C, Southern KW, Brownlee K, et al. European best practice guidelines for cystic fibrosis neonatal screening. J Cyst Fibros. 2009 May;8(3):153-73.[Abstract]

            • 56. Ren CL, Borowitz DS, Gonska T, et al. Cystic fibrosis transmembrane conductance regulator-related metabolic syndrome and cystic fibrosis screen positive, inconclusive diagnosis. J Pediatr. 2017 Feb;181S:S45-51.e1.[Abstract][Full Text]

            • 57. Barben J, Castellani C, Munck A, et al. Updated guidance on the management of children with cystic fibrosis transmembrane conductance regulator-related metabolic syndrome/cystic fibrosis screen positive, inconclusive diagnosis (CRMS/CFSPID). J Cyst Fibros. 2021 Sep;20(5):810-9.[Abstract]

            • 58. Green DM, Lahiri T, Raraigh KS, et al. Cystic Fibrosis Foundation evidence-based guideline for the management of CRMS/CFSPID. Pediatrics. 2024 May 1;153(5):e2023064657.[Abstract][Full Text]

            • 59. Kallam EF, Kasi AS, Barr E, et al. Diagnostic challenges in CFTR-related metabolic syndrome: where the guidelines fall short. Paediatr Respir Rev. 2024 Mar;49:28-33.[Abstract]

            • 60. Sellers ZM, Assis DN, Paranjape SM, et al. Cystic fibrosis screening, evaluation, and management of hepatobiliary disease consensus recommendations. Hepatology. 2024 May 1;79(5):1220-38.[Abstract][Full Text]

            • 61. NHS England. Cystic fibrosis screening laboratory handbook. Jan 2026 [internet publication].​[Full Text]

            • 62. NHS England. RightCare cystic fibrosis toolkit. Sep 2024 [internet publication].​[Full Text]

            • 63. Cystic Fibrosis Trust. Standards for the clinical care of children and adults with cystic fibrosis in the UK: third edition​. Aug 2024 [internet publication].[Full Text]

            • 64. National Institute for Health and Care Excellence. Cystic fibrosis: diagnosis and management. Oct 2017 [internet publication].[Full Text]

            • 65. Ren CL, Morgan RL, Oermann C, et al. Cystic Fibrosis Foundation pulmonary guidelines. Use of cystic fibrosis transmembrane conductance regulator modulator therapy in patients with cystic fibrosis. Ann Am Thorac Soc. 2018 Mar;15(3):271-80.[Abstract][Full Text]

            • 66. Purkayastha D, Agtarap K, Wong K, et al. Drug-drug interactions with CFTR modulator therapy in cystic fibrosis: focus on Trikafta®/Kaftrio®. J Cyst Fibros. 2023 May;22(3):478-83.[Abstract][Full Text]

            • 67. Hong E, Shi A, Beringer P. Drug-drug interactions involving CFTR modulators: a review of the evidence and clinical implications. Expert Opin Drug Metab Toxicol. 2023 Apr;19(4):203-16.[Abstract]

            • 68. Taylor-Cousar JL, Robinson PD, Shteinberg M, et al. CFTR modulator therapy: transforming the landscape of clinical care in cystic fibrosis. Lancet. 2023 Sep 30;402(10408):1171-84.[Abstract]

            • 69. Hisert KB, Birket SE, Clancy JP, et al. Understanding and addressing the needs of people with cystic fibrosis in the era of CFTR modulator therapy. Lancet Respir Med. 2023 Oct;11(10):916-31.[Abstract]

            • 70. Hansen CME, Breukelman AJ, van den Bemt PMLA, et al. Medication adherence to CFTR modulators in patients with cystic fibrosis: a systematic review. Eur Respir Rev. 2024 Jul;33(173):240060.[Abstract][Full Text]

            • 71. Burgel PR, Sermet-Gaudelus I, Girodon E, et al; French Cystic Fibrosis Reference Network study group. The expanded French compassionate programme for elexacaftor-tezacaftor-ivacaftor use in people with cystic fibrosis without a F508del CFTR variant: a real-world study. Lancet Respir Med. 2024 Nov;12(11):888-900.[Abstract]

            • 72. Bailey J, Rozga M, McDonald CM, et al. Effect of CFTR modulators on anthropometric parameters in individuals with cystic fibrosis: an Evidence Analysis Center systematic review. J Acad Nutr Diet. 2021 Jul;121(7):1364-78.e2.[Abstract]

            • 73. Kapouni N, Moustaki M, Douros K, et al. Efficacy and safety of elexacaftor-tezacaftor-ivacaftor in the treatment of cystic fibrosis: a systematic review. Children (Basel). 2023 Mar 15;10(3):554.[Abstract][Full Text]

            • 74. Goralski JL, Hoppe JE, Mall MA, et al. Phase 3 open-label clinical trial of elexacaftor/tezacaftor/ivacaftor in children aged 2-5 years with cystic fibrosis and at least one F508del allele. Am J Respir Crit Care Med. 2023 Jul 1;208(1):59-67.[Abstract][Full Text]

            • 75. Zemanick ET, Taylor-Cousar JL, Davies J, et al. A phase 3 open-label study of elexacaftor/tezacaftor/ivacaftor in children 6 through 11 years of age with cystic fibrosis and at least one F508del allele. Am J Respir Crit Care Med. 2021 Jun 15;203(12):1522-32.[Abstract][Full Text]

            • 76. Heijerman HGM, McKone EF, Downey DG, et al. Efficacy and safety of the elexacaftor plus tezacaftor plus ivacaftor combination regimen in people with cystic fibrosis homozygous for the F508del mutation: a double-blind, randomised, phase 3 trial. Lancet. 2019 Nov 23;394(10212):1940-8.[Abstract]

            • 77. Barry PJ, Mall MA, Álvarez A, et al; VX18-445-104 Study Group. Triple therapy for cystic fibrosis Phe508del-gating and -residual function genotypes. N Engl J Med. 2021 Aug 26;385(9):815-25.[Abstract][Full Text]

            • 78. Sutharsan S, McKone EF, Downey DG, et al. Efficacy and safety of elexacaftor plus tezacaftor plus ivacaftor versus tezacaftor plus ivacaftor in people with cystic fibrosis homozygous for F508del-CFTR: a 24-week, multicentre, randomised, double-blind, active-controlled, phase 3b trial. Lancet Respir Med. 2022 Mar;10(3):267-77.[Abstract]

            • 79. Middleton PG, Mall MA, Dřevínek P, et al; VX17-445-102 Study Group. Elexacaftor-tezacaftor-ivacaftor for cystic fibrosis with a single phe508del allele. N Engl J Med. 2019 Nov 7;381(19):1809-19.[Abstract][Full Text]

            • 80. Silva Filho LVRFD, Athanazio RA, Tonon CR, et al. Use of elexacaftor+tezacaftor+ivacaftor in individuals with cystic fibrosis and at least one F508del allele: a systematic review and meta-analysis. J Bras Pneumol. 2024;49(6):e20230187.[Abstract][Full Text]

            • 81. Lupas D, Chou FY, Hakani MAA, et al. The clinical effectiveness of elexacaftor/tezacaftor/ivacaftor (ETI) for people with CF without a F508del variant: a systematic review and meta-analysis. J Cyst Fibros. 2024 Sep;23(5):950-8.[Abstract][Full Text]

            • 82. Mall MA, Wainwright CE, Legg J, et al; VX20-445-119 Study Group. Elexacaftor/tezacaftor/ivacaftor in children aged ≥6 years with cystic fibrosis heterozygous for F508del and a minimal function mutation: results from a 96-week open-label extension study. Eur Respir J. 2025 Jul;66(1):2402435.[Abstract][Full Text]

            • 83. Okroglic L, Sohier P, Martin C, et al. Acneiform eruption following elexacaftor-tezacaftor-ivacaftor treatment in patients with cystic fibrosis. JAMA Dermatol. 2023 Jan 1;159(1):68-72.[Abstract]

            • 84. Baroud E, Chaudhary N, Georgiopoulos AM. Management of neuropsychiatric symptoms in adults treated with elexacaftor/tezacaftor/ivacaftor. Pediatr Pulmonol. 2023 Jul;58(7):1920-30.[Abstract]

            • 85. Sermet-Gaudelus I, Benaboud S, Bui S, et al. Behavioural and sleep issues after initiation of elexacaftor-tezacaftor-ivacaftor in preschool-age children with cystic fibrosis. Lancet. 2024 Jul 13;404(10448):117-20.[Abstract][Full Text]

            • 86. Ramsey B, Correll CU, DeMaso DR, et al. Elexacaftor/tezacaftor/ivacaftor treatment and depression-related events. Am J Respir Crit Care Med. 2024 Feb 1;209(3):299-306.[Abstract][Full Text]

            • 87. García MS, Peláez A, Punter RMG, et al. Unveiling the psychosocial impact of elexacaftor/tezacaftor/ivacaftor therapy in cystic fibrosis patients. BMC Pulm Med. 2025 Feb 17;25(1):81.[Abstract][Full Text]

            • 88. Uzunoglu B, Selcuk Balci M, Kalyoncu M, et al. Elexacaftor/tezacaftor/ivacaftor treatment accessibility and mental health: reducing anxiety in people with cystic fibrosis. Pediatr Pulmonol. 2025 Mar;60(3):e71037.[Abstract][Full Text]

            • 89. Keating C, Yonker LM, Vermeulen F, et al; VX20-121-103 Study Group. Vanzacaftor-tezacaftor-deutivacaftor versus elexacaftor-tezacaftor-ivacaftor in individuals with cystic fibrosis aged 12 years and older (SKYLINE Trials VX20-121-102 and VX20-121-103): results from two randomised, active-controlled, phase 3 trials. Lancet Respir Med. 2025 Mar;13(3):256-71.[Abstract][Full Text]

            • 90. Hoppe JE, Kasi AS, Pittman JE, et al; VX21-121-105 Study Group. Vanzacaftor-tezacaftor-deutivacaftor for children aged 6-11 years with cystic fibrosis (RIDGELINE Trial VX21-121-105): an analysis from a single-arm, phase 3 trial. Lancet Respir Med. 2025 Mar;13(3):244-55.[Abstract][Full Text]

            • 91. Chilvers MA, Davies JC, Milla C, et al. Long-term safety and efficacy of lumacaftor-ivacaftor therapy in children aged 6-11 years with cystic fibrosis homozygous for the F508del-CFTR mutation: a phase 3, open-label, extension study. Lancet Respir Med. 2021 Jul;9(7):721-32.[Abstract]

            • 92. Walker S, Flume P, McNamara J, et al. A phase 3 study of tezacaftor in combination with ivacaftor in children aged 6 through 11 years with cystic fibrosis. J Cyst Fibros. 2019 Sep;18(5):708-13.[Abstract]

            • 93. Sawicki GS, Chilvers M, McNamara J, et al. A phase 3, open-label, 96-week trial to study the safety, tolerability, and efficacy of tezacaftor/ivacaftor in children ≥ 6 years of age homozygous for F508del or heterozygous for F508del and a residual function CFTR variant. J Cyst Fibros. 2022 Jul;21(4):675-83.[Abstract][Full Text]

            • 94. Flume PA, Biner RF, Downey DG, et al; VX14-661-110 study group. Long-term safety and efficacy of tezacaftor-ivacaftor in individuals with cystic fibrosis aged 12 years or older who are homozygous or heterozygous for Phe508del CFTR (EXTEND): an open-label extension study. Lancet Respir Med. 2021 Jul;9(7):733-46.[Abstract]

            • 95. Rosenfeld M, Wainwright CE, Higgins M, et al; ARRIVAL study group. Ivacaftor treatment of cystic fibrosis in children aged 12 to <24 months and with a CFTR gating mutation (ARRIVAL): a phase 3 single-arm study. Lancet Respir Med. 2018 Jul;6(7):545-53.[Abstract][Full Text]

            • 96. Davies J, Wang LT, Panorchan P, et al. WS06-4. Ivacaftor (IVA) treatment in patients 6 to <12 months old with cystic fibrosis with a CFTR gating mutation: results of a 2-part, single-arm, phase 3 study. Paper presented at: 42nd European Cystic Fibrosis Conference. 5-8 Jun 2019. Liverpool, UK. J Cyst Fibros. 2019 Jun 1;18(suppl 1):S11.[Full Text]

            • 97. Davies JC, Wainwright CE, Sawicki GS, et al. Ivacaftor in infants aged 4 to <12 months with cystic fibrosis and a gating mutation. Results of a two-part phase 3 clinical trial. Am J Respir Crit Care Med. 2021 Mar 1;203(5):585-93.[Abstract][Full Text]

            • 98. Skilton M, Krishan A, Patel S, et al. Potentiators (specific therapies for class III and IV mutations) for cystic fibrosis. Cochrane Database Syst Rev. 2019 Jan 7;(1):CD009841.[Abstract][Full Text]

            • 99. Mitchell RM, Jones AM, Stocking K, et al. Longitudinal effects of ivacaftor and medicine possession ratio in people with the Gly551Asp mutation: a 5-year study. Thorax. 2021 Sep;76(9):874-9.[Abstract]

            • 100. Mogayzel PJ Jr, Naureckas ET, Robinson KA, et al; Pulmonary Clinical Practice Guidelines Committee. Cystic fibrosis pulmonary guidelines. Chronic medications for maintenance of lung health. Am J Respir Crit Care Med. 2013 Apr 1;187(7):680-9.[Abstract][Full Text]

            • 101. Wilson LM, Morrison L, Robinson KA. Airway clearance techniques for cystic fibrosis: an overview of Cochrane systematic reviews. Cochrane Database Syst Rev. 2019 Jan 24;(1):CD011231.[Abstract][Full Text]

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