Stains
Gross cystic disease fluid protein 15 (GCDFP-15)


Topic Completed: 1 July 2013

Revised: 20 September 2019

Copyright: 2003-2019, PathologyOutlines.com, Inc.

PubMed Search: GCDFP-15

Nat Pernick, M.D.
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Cite this page: Pernick N. Gross cystic disease fluid protein 15 (GCDFP-15). PathologyOutlines.com website. http://www.pathologyoutlines.com/topic/stainsgcdfp15.html. Accessed October 13th, 2019.
Definition / general
  • Also called BRST2, prolactin-induced protein (PIP)
  • Physiology: glycoprotein originally isolated in human breast gross cystic fluid
Uses by pathologists
Microscopic (histologic) images

Case of the Week #68

Invasive apocrine
carcinoma of breast


Case of the Week #125

Metastatic lobular carcinoma
in an endometrial polyp



Images hosted on other servers:

Breast (benign)

Metastatic to lung

Metastatic to stomach (fig 3C)

Positive staining - normal
  • All apocrine, lacrimal, ceruminous and Moll glands
  • All cutaneous eccrine glands
  • Numerous serous cells of submandibular, sublingual and minor salivary glands
  • Also serous cells of nasal and bronchial glands (Virchows Arch 1998;432:255)
Positive staining - disease
Negative staining
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