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Distinct patterns of somatic genome alterations in lung adenocarcinomas and squamous cell carcinomas
Ist Teil von
Nature genetics, 2016-06, Vol.48 (6), p.607-616
Ort / Verlag
New York: Nature Publishing Group US
Erscheinungsjahr
2016
Quelle
MEDLINE
Beschreibungen/Notizen
Matthew Meyerson, Ramaswamy Govindan and colleagues examine the exome sequences and copy number profiles of 660 lung adenocarcinoma and 484 lung squamous cell carcinoma tumors. They identify novel significantly mutated genes and amplification peaks and find that around half of the tumors have at least five predicted neoepitopes.
To compare lung adenocarcinoma (ADC) and lung squamous cell carcinoma (SqCC) and to identify new drivers of lung carcinogenesis, we examined the exome sequences and copy number profiles of 660 lung ADC and 484 lung SqCC tumor–normal pairs. Recurrent alterations in lung SqCCs were more similar to those of other squamous carcinomas than to alterations in lung ADCs. New significantly mutated genes included
PPP3CA
,
DOT1L
, and
FTSJD1
in lung ADC,
RASA1
in lung SqCC, and
KLF5
,
EP300
, and
CREBBP
in both tumor types. New amplification peaks encompassed
MIR21
in lung ADC,
MIR205
in lung SqCC, and
MAPK1
in both. Lung ADCs lacking receptor tyrosine kinase–Ras–Raf pathway alterations had mutations in
SOS1
,
VAV1
,
RASA1
, and
ARHGAP35
. Regarding neoantigens, 47% of the lung ADC and 53% of the lung SqCC tumors had at least five predicted neoepitopes. Although targeted therapies for lung ADC and SqCC are largely distinct, immunotherapies may aid in treatment for both subtypes.