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. 2013 Oct 11;9(1):75–80. doi: 10.4161/epi.26488

Table 1. Summary of the most relevant findings in regard to epigenetics and non-coding RNAs.

Type of lncRNA Molecule Cancer Type Clinical significance References
Epigenetic regulation of non-coding RNAs
microRNAs miR-129–2 Hepatocellular carcinoma miR-129–2 methylation was specifically detected in plasma samples. Potential marker for early diagnosis. 15
miR-129–2 Hematological malignancies miR-129–2 methylation was found as adversely impacting survival in chronic lymphocytic leukemia (CLL) 16
miR-124–3 Renal carcinoma Increased methylation of miR-124–3 CpG islands associated with unfavorable prognosis such as tumor grade and diameter, metastasis and advanced disease. 18
miR-124 Acute lymphoblastic leukemia Hypermethylation of this locus was found as an independent prognostic factor for overall and disease-free survival and associated with higher relapse and mortality rates. 19
miR-34a Colon cancer Methylation of miR-34 associated with metastasis to liver and lymph nodes 20
miR-212 Lung cancer Silencing of miR-212 was correlated with later stages of the disease – staging T3/T4 22
lncRNAs H19 Hepatocellular carcinoma H19 involved disease progression 25
H19 Hepatocellular carcinoma Epigenetic activation of miR-200 family promotes H19 downregulation, driving metastasis through EMT induction. Low T/R ratio was associated with poor prognosis. 26
KIAA0495, PART1, MGC21881, MIAT, GAS5 and PAR5 Glioblastoma multiforme The six-lncRNA signature was linked with overall survival, alluding that this signature may possibly supply new markers for prognosis treatment and outcome prediction. 27
ANRIL Cancer in general Epigenetic modifications contribute to its silencing, which may bring both diagnostic and prognostic perspectives in the future. 30
Non-coding RNAs as regulators of epigenetics
epi-miRs miR-29 family Lung cancer Lower survival rates in patients with high levels of DNMT3A 31
miR-22 Hepatocellular carcinoma Decreased survival and worse prognosis when miR-22 was downregulated. 32
piRNAs Hiwi Esophageal squamous cell carcinoma Hiwi (Piwi human ortholog) associated with poor prognosis 46
lncRNAs XIST Testicular germ cells tumor Methylation status as a biomarker in plasma for early detection and prognosis. 43
HOTAIR Laryngeal squamous cell carcinoma Associated with poor tumor differentiation, lymph node metastasis and advanced clinical stages 44
HOTAIR Breast cancer (primary and metastasis) Predictor of metastasis and survival 45