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2015 ; 6
(32
): 32602-9
Nephropedia Template TP
gab.com Text
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Molecular inimitability amongst tumors: implications for precision cancer
medicine in the age of personalized oncology
#MMPMID26418953
Patel SP
; Schwaederle M
; Daniels GA
; Fanta PT
; Schwab RB
; Shimabukuro KA
; Kesari S
; Piccioni DE
; Bazhenova LA
; Helsten TL
; Lippman SM
; Parker BA
; Kurzrock R
Oncotarget
2015[Oct]; 6
(32
): 32602-9
PMID26418953
show ga
Tumor sequencing has revolutionized oncology, allowing for detailed interrogation
of the molecular underpinnings of cancer at an individual level. With this
additional insight, it is increasingly apparent that not only do tumors vary
within a sample (tumor heterogeneity), but also that each patient's individual
tumor is a constellation of unique molecular aberrations that will require an
equally unique personalized therapeutic regimen. We report here the results of
439 patients who underwent Clinical Laboratory Improvement Amendment
(CLIA)-certified next generation sequencing (NGS) across histologies. Among these
patients, 98.4% had a unique molecular profile, and aside from three primary
brain tumor patients with a single genetic lesion (IDH1 R132H), no two patients
within a given histology were molecularly identical. Additionally, two sets of
patients had identical profiles consisting of two mutations in common and no
other anomalies. However, these profiles did not segregate by histology (lung
adenocarcinoma-appendiceal cancer (KRAS G12D and GNAS R201C), and lung
adenocarcinoma-liposarcoma (CDK4 and MDM2 amplification pairs)). These findings
suggest that most advanced tumors are molecular singletons within and between
histologies, and that tumors that differ in histology may still nonetheless
exhibit identical molecular portraits, albeit rarely.