“A physician is obligated to consider more than a diseased organ, more even than the whole man -he must view the man in his world.”
Harvey Cushing (1869–1939)
Quoted in “Thomson EH (1950) Harvey Cushing: Surgeon, Author, Artist. Henry Schuman, New York: p ix”
Abstract
Background
The growing interest in the molecular and genetic alterations of craniopharyngiomas (CPs) is embodied in recent studies revealing insights into the CP tumorigenesis and identifying novel molecular pathways amenable of targeted therapies. The actual impact of this new information, however, remains inconclusive.
Methods
We present a comprehensive review of the accumulated knowledge on molecular biology of CPs and a critical analysis on the strengths and weaknesses of the studies focused on CP molecular/genetic alterations published to date.
Results
A thorough analysis of the alterations of β-catenin/CTNNB1 and BRAF genes investigated in 1123 CP cases included in 27 studies, showed that, on average, CTNNB1 mutations were present in two-thirds of adamantinomatous CPs and BRAF mutations in 90% of papillary CPs. Their role as oncogenic drivers has not been well established. Although rare, coexistence of both mutations may occur. The involvement of pituitary stem cells in human CP tumorigenesis is still uncertain. Expression of stem markers in human CP samples predominantly occurred along the CP border in contact with brain tissue. Finally, none of the various molecular alterations which have been proposed as markers for CP recurrence can be used today as reliable predictors of the CP behavior.
Conclusions
The isolated evaluation of CPs’ molecular or genetic profiles that do not take into consideration fundamental pathological and therapeutic factors, specifically the tumor topography and the degree of tumor removal, may actually generate confusion regarding the reliability of some biomarkers to predict the CP biological behavior.
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Abbreviations
- aCP:
-
Adamantinomatous CP
- CP:
-
Craniopharyngioma
- LI:
-
Labelling index
- pCP:
-
Squamous papillary CP
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Acknowledgements
The authors especially wish to thank Eduard Winter and Verena Hofecker, from the Pathologic-Anatomical museum of Vienna, for their kind assistance to study the collection of craniopharyngiomas stored at the Narrenturm (Fools’ Tower). We are also grateful to George Hamilton for his critical review of the language and style of the manuscript.
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Conception and design: RP. Acquisition of data: RP and JMP. Drafting the article: RP and JMP. Critically revising the article: RP and JMP.
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The authors report no conflict of interest concerning the materials or methods used in this study or the findings specified in this paper.
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Prieto, R., Pascual, J.M. Can tissue biomarkers reliably predict the biological behavior of craniopharyngiomas? A comprehensive overview. Pituitary 21, 431–442 (2018). https://doi.org/10.1007/s11102-018-0890-6
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DOI: https://doi.org/10.1007/s11102-018-0890-6