Skip to main content

The Importance of Case Reports in Advancing Scientific Knowledge of Rare Diseases

  • Chapter
  • First Online:
Rare Diseases Epidemiology

Part of the book series: Advances in Experimental Medicine and Biology ((AEMB,volume 686))

Abstract

Case reports are defined as the scientific documentation of a single clinical observation and have a time-honored and rich tradition in medicine and scientific publication. Case reports represent a relevant, timely, and important study design in advancing medical scientific knowledge especially of rare diseases. While there are clear limitations to the methodology of case studies in determination of treatment and establishment of new tests, the observation of a single patient can add to our understanding of etiology, pathogenesis, natural history, and treatment of particularly rare diseases, and to the training of potential junior investigators. In recent years this class of scientific publication has come under scrutiny and disfavor among some in the medical scientific publication community and case studies are frequently relegated to the lowest rung of the hierarchy of study design. In this chapter the author will review and summarize the debate around the scientific publication of case reports in the context of the study of rare diseases and will present a taxonomy that ideally will encourage further dialogue on the topic. Future research on the importance of case reports in advancing knowledge of rare diseases is recommended.

This is a preview of subscription content, log in via an institution to check access.

Access this chapter

Institutional subscriptions

References

  1. Aleck KA, Bartley DL (1997) Multiple malformation syndrome following fluconazole use in pregnancy: report of an additional patient. Am J Med Genet 72:253–256

    Article  PubMed  CAS  Google Scholar 

  2. Al-Rahawan MM, Chute DJ, Sol-Church K et al (2007) Hepatoblastoma and cardiac transplantation on a patient with cardio-facial-cutaneous syndrome. Am J Med Genet Part A 143A:148–1488

    Google Scholar 

  3. Balci S, Engiz O, Aktas D et al (2006) Ring chromosome 4 and Wolf–Hirschhorn syndrome (WHS) in a child with multiple anomalies. Am J Med Genet Part A 140A:628–632

    Article  Google Scholar 

  4. Biesecker L (2004) Endangered species. Am J Med Genet Part A 128A:429–430

    Article  PubMed  Google Scholar 

  5. Bocian M, Walker AP (1987) Lip pits and deletion 1q32→41. Am J Med Genet 26: 437–443

    Article  PubMed  CAS  Google Scholar 

  6. Böhm D, Hoffmann K, Laccone F et al (2006) Association of Jacobsen syndrome and bipolar affective disorder in a patient with a de novo 11q terminal deletion. Am J Med Genet Part A 140A:378–382

    Article  Google Scholar 

  7. Boyd LJ, Livingston JS, Brown MG et al (2005) Meiotic exchange event within the stalk region of an inverted chromosome 22 results in a recombinant chromosome with duplication of the distal long arm. Am J Med Genet Part A 138A:355–360

    Article  Google Scholar 

  8. Carey JC (2006) Editorial comment: a species not extinct: publication of case reports and scientific knowledge. Am J Med Genet Part A 140A:801–803

    Article  Google Scholar 

  9. Carey JC (2006) The significance of case reports in the advancement of medical scientific knowledge. Am J Med Genet Part A 140A:2131–2134

    Article  Google Scholar 

  10. Carey JC, Martinez L, Balken E et al (2009) Determination of human teratogenicity by the astute clinician method: review of illustrative agents and a proposal of guidelines. Birth Defects Res Part A 85:63–68

    Article  CAS  Google Scholar 

  11. Dauphinee L, Peipert JF, Phipps M et al (2005) Research methodology and analytic techniques used in the Journal Obstetrics & Gynecology. Obstet Gynecol 106:808–812

    Article  PubMed  Google Scholar 

  12. Dong P, Loh M, Mondry A (2005) The “impact factor” revisited. Biomed Digit Libr 2:7

    Article  PubMed  Google Scholar 

  13. Feldman BJ, Rosenthal SM, Vargas GA et al (2005) Nephrogenic syndrome of inappropriate antidiuresis. N Engl J Med 352:1884–1890

    Article  PubMed  CAS  Google Scholar 

  14. Greenhalgh T, Hurwitz B (1999) Narrative based medicine: why study narrative? BMJ 318:48–50

    Article  PubMed  CAS  Google Scholar 

  15. Hoffman WH, Jueppner HA, DeYoung BR et al (2005) Elevated fibroblast growth factor-23 in hypophosphatemic linear nevus sebaceous syndrome. Am J Med Genet Part A 134A:233–236

    Article  Google Scholar 

  16. Hunter KM (1991) Doctor’s Stories: narrative structure of medical knowledge. Princeton University Press, Princeton, NJ

    Google Scholar 

  17. Loke YK, Price P, Derry S et al (2006) Case reports of suspected adverse drug reactions-systematic literature survey of follow-up. BMJ 332:335–338

    Article  PubMed  Google Scholar 

  18. McNeill A, Parkin CK, Rubab U (2007) Using a case report to teach junior doctors about mediacla publishing. Med Teach 29:511

    Article  PubMed  Google Scholar 

  19. Patsopoulos NA, Apostolos AA, Ioannidis JPA (2005) Relative citation impact of various study designs in the health sciences. JAMA 293:2362–2366

    Article  PubMed  CAS  Google Scholar 

  20. Perez-Aytes A, Ledo A, Boso V et al (2008) In utero exposure to mycophenolate mofetil: a characteristic phenotype? Am J Med Genet Part A 146A:1–7

    Article  PubMed  Google Scholar 

  21. Rodríguez L, Zollino M, Climent S et al (2005) The new Wolf–Hirschhorn syndrome critical region (WHSCR-2): a description of a second case. Am J Med Genet Part A 136A:175–178

    Article  Google Scholar 

  22. Scott J (2009) In defense of case reports. Obstet Gynecol 114:413–414

    Article  PubMed  Google Scholar 

  23. South ST, Swensen JJ, Maxwell T et al (2006) A new genomic mechanism leading to cri du chat syndrome. Am J Med Genet Part A 140A:2714–2720

    Article  CAS  Google Scholar 

  24. Takagishi J, Rauen KA, Drumheller T et al (2006) Chromosome 3p25 deletion in mother and daughter with minimal phenotypic effect. Am J Med Genet Part A 140A:1587–1593

    Article  Google Scholar 

  25. Van Bever Y, Rooms L, Laridon A et al (2005) Clinical report of a pure subtelomeric 1q deletion in a boy with mental retardation and multiple anomalies adds further evidence for a specific phenotype. Am J Med Genet Part A 135A:91–95

    Article  Google Scholar 

  26. Vandenbroucke JP (1999) Case reports in an evidence-based world. J Roy Soc Med 92:159–163

    PubMed  CAS  Google Scholar 

  27. Vandenbroucke JP (2001) In defense of case reports and case series. Ann Intern Med 134:330–334

    PubMed  CAS  Google Scholar 

Download references

Acknowledgements

The author expresses appreciation to Drs Leslie Biesecker and John Opitz for the many fruitful discussions of this topic and to Dr Edward Clark for his gracious support of the time in the summer of 2007 to study this theme in detail. The author also appreciates the administrative expertise provided by Feliz Martinez and Meg Weist, both of the American Journal of Medical Genetics editorial office, in preparation for the research for this and related work on case reports. Lastly the author is grateful to Kevin Jeannette and Colette Bean of Wiley-Blackwell, who created Fig 5.1 .

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to John C. Carey .

Editor information

Editors and Affiliations

Rights and permissions

Reprints and permissions

Copyright information

© 2010 Springer Netherlands

About this chapter

Cite this chapter

Carey, J.C. (2010). The Importance of Case Reports in Advancing Scientific Knowledge of Rare Diseases. In: Posada de la Paz, M., Groft, S. (eds) Rare Diseases Epidemiology. Advances in Experimental Medicine and Biology, vol 686. Springer, Dordrecht. https://doi.org/10.1007/978-90-481-9485-8_5

Download citation

Publish with us

Policies and ethics