TY - JOUR
T1 - Mixed responses to targeted therapy driven by chromosomal instability through p53 dysfunction and genome doubling
AU - Hobor, Sebastijan
AU - Al Bakir, Maise
AU - Hiley, Crispin T.
AU - Skrzypski, Marcin
AU - Frankell, Alexander M.
AU - Bakker, Bjorn
AU - Watkins, Thomas B.K.
AU - Markovets, Aleksandra
AU - Dry, Jonathan R.
AU - Brown, Andrew P.
AU - van der Aart, Jasper
AU - van den Bos, Hilda
AU - Spierings, Diana
AU - Oukrif, Dahmane
AU - Novelli, Marco
AU - Chakrabarti, Turja
AU - Rabinowitz, Adam H.
AU - Ait Hassou, Laila
AU - Litière, Saskia
AU - Kerr, D. Lucas
AU - Tan, Lisa
AU - Kelly, Gavin
AU - Moore, David A.
AU - Renshaw, Matthew J.
AU - Venkatesan, Subramanian
AU - Hill, William
AU - Huebner, Ariana
AU - Martínez-Ruiz, Carlos
AU - Black, James R.M.
AU - Wu, Wei
AU - Angelova, Mihaela
AU - McGranahan, Nicholas
AU - Downward, Julian
AU - Chmielecki, Juliann
AU - Barrett, Carl
AU - Litchfield, Kevin
AU - Chew, Su Kit
AU - Blakely, Collin M.
AU - de Bruin, Elza C.
AU - Foijer, Floris
AU - Vousden, Karen H.
AU - Bivona, Trever G.
AU - Lester, Jason F.
AU - Bajaj, Amrita
AU - Nakas, Apostolos
AU - Sodha-Ramdeen, Azmina
AU - Tufail, Mohamad
AU - Birkbak, Nicolai J.
AU - Kisistok, Judit
AU - Sokac, Mateo
AU - TRACERx Consortium
N1 - Publisher Copyright:
© The Author(s) 2024.
PY - 2024/12
Y1 - 2024/12
N2 - The phenomenon of mixed/heterogenous treatment responses to cancer therapies within an individual patient presents a challenging clinical scenario. Furthermore, the molecular basis of mixed intra-patient tumor responses remains unclear. Here, we show that patients with metastatic lung adenocarcinoma harbouring co-mutations of EGFR and TP53, are more likely to have mixed intra-patient tumor responses to EGFR tyrosine kinase inhibition (TKI), compared to those with an EGFR mutation alone. The combined presence of whole genome doubling (WGD) and TP53 co-mutations leads to increased genome instability and genomic copy number aberrations in genes implicated in EGFR TKI resistance. Using mouse models and an in vitro isogenic p53-mutant model system, we provide evidence that WGD provides diverse routes to drug resistance by increasing the probability of acquiring copy-number gains or losses relative to non-WGD cells. These data provide a molecular basis for mixed tumor responses to targeted therapy, within an individual patient, with implications for therapeutic strategies.
AB - The phenomenon of mixed/heterogenous treatment responses to cancer therapies within an individual patient presents a challenging clinical scenario. Furthermore, the molecular basis of mixed intra-patient tumor responses remains unclear. Here, we show that patients with metastatic lung adenocarcinoma harbouring co-mutations of EGFR and TP53, are more likely to have mixed intra-patient tumor responses to EGFR tyrosine kinase inhibition (TKI), compared to those with an EGFR mutation alone. The combined presence of whole genome doubling (WGD) and TP53 co-mutations leads to increased genome instability and genomic copy number aberrations in genes implicated in EGFR TKI resistance. Using mouse models and an in vitro isogenic p53-mutant model system, we provide evidence that WGD provides diverse routes to drug resistance by increasing the probability of acquiring copy-number gains or losses relative to non-WGD cells. These data provide a molecular basis for mixed tumor responses to targeted therapy, within an individual patient, with implications for therapeutic strategies.
UR - http://www.scopus.com/inward/record.url?scp=85196137928&partnerID=8YFLogxK
U2 - 10.1038/s41467-024-47606-9
DO - 10.1038/s41467-024-47606-9
M3 - Journal article
C2 - 38871738
AN - SCOPUS:85196137928
SN - 2041-1723
VL - 15
JO - Nature Communications
JF - Nature Communications
IS - 1
M1 - 4871
ER -