Late-Stage Metastatic Melanoma Emerges through a Diversity of Evolutionary Pathways

©2023 The Authors; Published by the American Association for Cancer Research..

Understanding the evolutionary pathways to metastasis and resistance to immune-checkpoint inhibitors (ICI) in melanoma is critical for improving outcomes. Here, we present the most comprehensive intrapatient metastatic melanoma dataset assembled to date as part of the Posthumous Evaluation of Advanced Cancer Environment (PEACE) research autopsy program, including 222 exome sequencing, 493 panel-sequenced, 161 RNA sequencing, and 22 single-cell whole-genome sequencing samples from 14 ICI-treated patients. We observed frequent whole-genome doubling and widespread loss of heterozygosity, often involving antigen-presentation machinery. We found KIT extrachromosomal DNA may have contributed to the lack of response to KIT inhibitors of a KIT-driven melanoma. At the lesion-level, MYC amplifications were enriched in ICI nonresponders. Single-cell sequencing revealed polyclonal seeding of metastases originating from clones with different ploidy in one patient. Finally, we observed that brain metastases that diverged early in molecular evolution emerge late in disease. Overall, our study illustrates the diverse evolutionary landscape of advanced melanoma.

SIGNIFICANCE: Despite treatment advances, melanoma remains a deadly disease at stage IV. Through research autopsy and dense sampling of metastases combined with extensive multiomic profiling, our study elucidates the many mechanisms that melanomas use to evade treatment and the immune system, whether through mutations, widespread copy-number alterations, or extrachromosomal DNA. See related commentary by Shain, p. 1294. This article is highlighted in the In This Issue feature, p. 1275.

Errataetall:

CommentIn: Cancer Discov. 2023 Jun 2;13(6):1294-1296. - PMID 37264823

Medienart:

E-Artikel

Erscheinungsjahr:

2023

Erschienen:

2023

Enthalten in:

Zur Gesamtaufnahme - volume:13

Enthalten in:

Cancer discovery - 13(2023), 6 vom: 02. Juni, Seite 1364-1385

Sprache:

Englisch

Beteiligte Personen:

Spain, Lavinia [VerfasserIn]
Coulton, Alexander [VerfasserIn]
Lobon, Irene [VerfasserIn]
Rowan, Andrew [VerfasserIn]
Schnidrig, Desiree [VerfasserIn]
Shepherd, Scott T C [VerfasserIn]
Shum, Benjamin [VerfasserIn]
Byrne, Fiona [VerfasserIn]
Goicoechea, Maria [VerfasserIn]
Piperni, Elisa [VerfasserIn]
Au, Lewis [VerfasserIn]
Edmonds, Kim [VerfasserIn]
Carlyle, Eleanor [VerfasserIn]
Hunter, Nikki [VerfasserIn]
Renn, Alexandra [VerfasserIn]
Messiou, Christina [VerfasserIn]
Hughes, Peta [VerfasserIn]
Nobbs, Jaime [VerfasserIn]
Foijer, Floris [VerfasserIn]
van den Bos, Hilda [VerfasserIn]
Wardenaar, Rene [VerfasserIn]
Spierings, Diana C J [VerfasserIn]
Spencer, Charlotte [VerfasserIn]
Schmitt, Andreas M [VerfasserIn]
Tippu, Zayd [VerfasserIn]
Lingard, Karla [VerfasserIn]
Grostate, Lauren [VerfasserIn]
Peat, Kema [VerfasserIn]
Kelly, Kayleigh [VerfasserIn]
Sarker, Sarah [VerfasserIn]
Vaughan, Sarah [VerfasserIn]
Mangwende, Mary [VerfasserIn]
Terry, Lauren [VerfasserIn]
Kelly, Denise [VerfasserIn]
Biano, Jennifer [VerfasserIn]
Murra, Aida [VerfasserIn]
Korteweg, Justine [VerfasserIn]
Lewis, Charlotte [VerfasserIn]
O'Flaherty, Molly [VerfasserIn]
Cattin, Anne-Laure [VerfasserIn]
Emmerich, Max [VerfasserIn]
Gerard, Camille L [VerfasserIn]
Pallikonda, Husayn Ahmed [VerfasserIn]
Lynch, Joanna [VerfasserIn]
Mason, Robert [VerfasserIn]
Rogiers, Aljosja [VerfasserIn]
Xu, Hang [VerfasserIn]
Huebner, Ariana [VerfasserIn]
McGranahan, Nicholas [VerfasserIn]
Al Bakir, Maise [VerfasserIn]
Murai, Jun [VerfasserIn]
Naceur-Lombardelli, Cristina [VerfasserIn]
Borg, Elaine [VerfasserIn]
Mitchison, Miriam [VerfasserIn]
Moore, David A [VerfasserIn]
Falzon, Mary [VerfasserIn]
Proctor, Ian [VerfasserIn]
Stamp, Gordon W H [VerfasserIn]
Nye, Emma L [VerfasserIn]
Young, Kate [VerfasserIn]
Furness, Andrew J S [VerfasserIn]
Pickering, Lisa [VerfasserIn]
Stewart, Ruby [VerfasserIn]
Mahadeva, Ula [VerfasserIn]
Green, Anna [VerfasserIn]
Larkin, James [VerfasserIn]
Litchfield, Kevin [VerfasserIn]
Swanton, Charles [VerfasserIn]
Jamal-Hanjani, Mariam [VerfasserIn]
PEACE Consortium [VerfasserIn]
Turajlic, Samra [VerfasserIn]

Links:

Volltext

Themen:

9007-49-2
DNA
Journal Article
Research Support, N.I.H., Extramural
Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

Anmerkungen:

Date Completed 05.06.2023

Date Revised 20.03.2024

published: Print

CommentIn: Cancer Discov. 2023 Jun 2;13(6):1294-1296. - PMID 37264823

Citation Status MEDLINE

doi:

10.1158/2159-8290.CD-22-1427

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM354824287