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A patient-derived next-generation cancer model generated by the Human Cancer Models Initiative (HCMI). HCM-CSHL-0773-C18 (ATCC No. PDM-523) was isolated from metastatic breast cancer tissue. This tumor-derived model can be used in basic research and pharmacological screening applications. Data for the parental tumor and the tumor-derived organoid models are available at the GDC. Additional molecular characterizations may be available at the GDC. Additional controlled data may be available via dbGaP.

Product category
Human cells
Product type
Cell model
Homo sapiens, human


Cancer; Metastatic
3D cell culture
Cancer research
Product format
Storage conditions
Vapor phase of liquid nitrogen
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ATCC determines the biosafety level of a material based on our risk assessment as guided by the current edition of Biosafety in Microbiological and Biomedical Laboratories (BMBL), U.S. Department of Health and Human Services. It is your responsibility to understand the hazards associated with the material per your organization’s policies and procedures as well as any other applicable regulations as enforced by your local or national agencies.

ATCC highly recommends that appropriate personal protective equipment is always used when handling vials. For cultures that require storage in liquid nitrogen, it is important to note that some vials may leak when submersed in liquid nitrogen and will slowly fill with liquid nitrogen. Upon thawing, the conversion of the liquid nitrogen back to its gas phase may result in the vial exploding or blowing off its cap with dangerous force creating flying debris. Unless necessary, ATCC recommends that these cultures be stored in the vapor phase of liquid nitrogen rather than submersed in liquid nitrogen.

Required Products

These products are vital for the proper use of this item and have been confirmed as effective in supporting functionality. If you use alternative products, the quality and effectiveness of the item may be affected.

Detailed product information


Specific applications

Basic research, compound screening


Cells per vial
≥ 1.0 x 106
Growth properties
Embedded 3D culture
Clinical data

ICD-10-CM code: C50 malignant neoplasm of breast; breast cancer

Metastatic breast cancer See associated clinical data for patient profile information if available.

See associated clinical data for patient profile information, if available.

Next-generation cancer model from the Human Cancer Models Initiative (HCMI). Refer to the following websites for additional information on this model including protocols, clinical information, and bioinformatics data.

If use of this culture results in a scientific publication, it should be cited in that manuscript in the following manner: HCM-CSHL-0773-C50 (ATCC® PDM-523).

Additionally, please acknowledge the HCMI as follows: “We used models and data derived by the Human Cancer Models Initiative (HCMI); dbGaP accession number phs001486.”


Handling information

Complete medium

To prepare the complete medium for this organoid model, please refer to the Organoid Media Formulation #8.

ATCC offers the recombinant proteins, small molecules, and other supplements to make this complete medium; Organoid Growth Kit 1F (ATCC ACS-7105) provides these supplements in a convenient, pre-portioned, ready-to-reconstitute format that does not require aliquoting or storage once prepared.

95% Air, 5% CO2
Handling procedure

Seeding density: We recommend seeding this model at 0.25 - 1 x 106/ viable cells in 100 µL of ECM per well of a 6-well plate.

ECM: We recommend culturing this model in ATCC Cell Basement Membrane (ATCC ACS-3035) or Corning Matrigel. Include 10 µM ROCK Inhibitor Y-27632 (ATCC ACS-3030) in medium for the first 2-3 days following subculture.

For a brief overview of the thawing procedure see our quickstart guide Thawing Cryopreserved Human Organoids.

Subculturing procedure

Initiating culture from frozen vials: For a brief overview of the thawing procedure see our quickstart guide Thawing Cryopreserved Human Organoids.

Seeding density: 0.3 - 0.5 x 106/ viable cells in 100 µL of ECM per well of a 6-well plate. Alternatively, split at 1:2-1:4 every 7-10 days. For example, collect organoids from 100 µL of extracellular matrix (ECM) from a single well of a 6-well plate and re-seed into 2-4 wells of a 6-well plate in 100 µL ECM per well.

Note: Mammary cancer organoids may be extremely slow to proliferate. Passing interval may be 3-4 weeks or longer. Keep model at a high density as organoid formation efficiency may decrease or cease if density becomes too low. Mammary cancer models are also very sensitive to mis-handling including over-dissociation.

Media renewal: Perform a complete medium change every 2-3 days. Include 10 µM ROCK Inhibitor Y-27632 (ATCC ACS-3030) in medium for the first 2-3 days following subculture.

For a brief overview of the subculture and expansion of organoids see our quickstart guide Subculture and Expansion of Human Organoids Protocol.

Reagents for cryopreservation

We recommend cryopreserving this model in ATCC Stem Cell Freezing Media (ATCC ACS-3020).


For a brief overview of the cryopreservation procedure for organoids see our quickstart guide Organoid Cryopreservation Protocol.

For more details on the handling and culture of organoids see our methods paper in Current Protocols in Cell Biology.

Quality control specifications

Bacterial and fungal testing
Not detected
Mycoplasma contamination
Not detected
Virus testing
Cytomegalovirus (CMV): Not detected
Epstein-Barr virus (EBV): Not detected
Hepatitis B virus (HBV): Not detected
Human Immunodeficiency virus (HIV): Not detected
Human papillomavirus (HPV): Not detected


Cold Spring Harbor Laboratory
Year of origin
Special collection
Human Cancer Models Initiative (HCMI)

Legal disclaimers

Intended use
This product is intended for laboratory research use only. It is not intended for any animal or human therapeutic use, any human or animal consumption, or any diagnostic use.

The product is provided 'AS IS' and the viability of ATCC® products is warranted for 30 days from the date of shipment, provided that the customer has stored and handled the product according to the information included on the product information sheet, website, and Certificate of Analysis. For living cultures, ATCC lists the media formulation and reagents that have been found to be effective for the product. While other unspecified media and reagents may also produce satisfactory results, a change in the ATCC and/or depositor-recommended protocols may affect the recovery, growth, and/or function of the product. If an alternative medium formulation or reagent is used, the ATCC warranty for viability is no longer valid.  Except as expressly set forth herein, no other warranties of any kind are provided, express or implied, including, but not limited to, any implied warranties of merchantability, fitness for a particular purpose, manufacture according to cGMP standards, typicality, safety, accuracy, and/or noninfringement.


This product is intended for laboratory research use only. It is not intended for any animal or human therapeutic use, any human or animal consumption, or any diagnostic use. Any proposed commercial use is prohibited without a license from ATCC.

While ATCC uses reasonable efforts to include accurate and up-to-date information on this product sheet, ATCC makes no warranties or representations as to its accuracy. Citations from scientific literature and patents are provided for informational purposes only. ATCC does not warrant that such information has been confirmed to be accurate or complete and the customer bears the sole responsibility of confirming the accuracy and completeness of any such information.

This product is sent on the condition that the customer is responsible for and assumes all risk and responsibility in connection with the receipt, handling, storage, disposal, and use of the ATCC product including without limitation taking all appropriate safety and handling precautions to minimize health or environmental risk. As a condition of receiving the material, the customer agrees that any activity undertaken with the ATCC product and any progeny or modifications will be conducted in compliance with all applicable laws, regulations, and guidelines. This product is provided 'AS IS' with no representations or warranties whatsoever except as expressly set forth herein and in no event shall ATCC, its parents, subsidiaries, directors, officers, agents, employees, assigns, successors, and affiliates be liable for indirect, special, incidental, or consequential damages of any kind in connection with or arising out of the customer's use of the product. While reasonable effort is made to ensure authenticity and reliability of materials on deposit, ATCC is not liable for damages arising from the misidentification or misrepresentation of such materials.

Please see the material transfer agreement (MTA) for further details regarding the use of this product. The MTA is available at

Permits & Restrictions

Material Transfer Agreement Addendum for Organoid Products

For every order of this item, you must provide a signed Material Transfer Agreement Addendum for Organoid Products. We cannot ship this item until we receive this addendum. Email the signed addendum to [email protected] with a reference to both your account and sales order numbers. Once received, your addendum will be reviewed, and this item will be released for shipment if all requirements are met. If you need assistance with your order, please contact our Customer Care team or your applicable distributor.



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