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Status unknownNCT01919580Updated Apr 15, 2014

Study on the Carcinogenesis of Gα12 in Oral Cancer, and the Treatment of Oral Cancer Using Ga12 Inhibitor.

An observational study in Carcinogenesis and Oral Cancer, sponsored by National Taiwan University Hospital. Status unknown at 1 site in Taiwan. Open to participants aged 20 Years to 80 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2014-04-15.

Sponsored by National Taiwan University Hospital · Observational

The sponsor has not verified this record recently (last verified Apr 2014), so the status shown — last known as Recruiting — may be out of date.
Study type
Observational
Model
Case-control
Enrollment
255
Ages
20 Years to 80 Years
Sex
All
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Study summary

Study on the carcinogenesis of Gα12 in oral cancer, and chemopreventive possibility for the treatment of oral cancer using Ga12 inhibitor.

Read the detailed description

To find out if there is prognostic value which to the performance of Gα12 of oral cancer in Taiwan and provide some reference for future treatment.

We anticipate to enroll 40 persons with normal oral mucosa, 65 persons with oral dysplasia and 150 persons with oral cancer and collect the tissue which was stained for pathological sections over a 3 year period.

We also collect the blood and saliva samples from patients and the results along with patient-specific information such as tumor phases, tumor size, lymph node metastasis, cancer metastasis, prognosis and betel nut chewing, smoking and drinking habits and other parameters are statistically analyzed.

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Conditions studied

  • Carcinogenesis
  • Oral Cancer

Keywords

  • Gα12
  • Oral cancer
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In context

Mouth Neoplasms

377 studies on the registry are indexed under Mouth Neoplasms; 126 are open to participants now.

This study's planned enrollment of 255 is above the median of 90 across 103 observational studies indexed under Mouth Neoplasms.

Browse Mouth Neoplasms studies →

Lead sponsor

National Taiwan University Hospital is the lead sponsor of 2,563 studies on the registry; 569 are open to participants now.

Of its 11 completed or terminated interventional studies of FDA-regulated products, 2 (18%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
20 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
Yes
Sampling method
Probability sample

Study population

Medical center

Inclusion criteria

  • Dysplasia or cancer of the oral cavity.

Exclusion criteria

Exclusion Criteria:

  • pregnant woman
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Study design

Observational model
Case-control
Enrollment
255 participants (estimated)
Patient registry
No
Biospecimen retention
Samples with dna

Groups and cohorts

  • Normal team

    Subjects who have problem at third molar of impacted tooth need to receive a surgery with general anesthesia. Subjects must: Should have a blood exam (20ml) before the surgery. Site staff must: Collect subjects' saliva once a day (in the morning before breakfast) for 3 consecutive days. Collect a 0.5x0.5Cm2 tissue sample around third molar during the surgery.

  • Oral dysplasia

    Subjects who are diagnosed with dysplasia of oral cavity. Subjects must: Should have a blood exam (20ml/each time) before the surgery and 3 months after the surgery. In the case the disease recurs after the surgery, subjects need to receive the surgery again and take another blood exam before the surgery and 3 months after the surgery. Before the surgery site staff must: Collect subjects' saliva once a day (in the morning before breakfast) for 3 consecutive days. Collect a 0.5x0.5Cm2 tissue sample of the tumor during the surgery.

  • Oral cancer

    Subjects who suffer from oral cancer. Subjects must: Should have a blood exam (20ml/each time) before the surgery and 3 months after the surgery. In the case the disease recurs after the surgery, subjects need to receive the surgery again and take another blood exam before the surgery and 3 months after the surgery. Before the surgery site staff must: Collect subjects' saliva once a day (in the morning before breakfast) for 3 consecutive days. Collect a 0.5x0.5Cm2 tissue sample of the tumor during the surgery.

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What researchers measure

Primary outcomes

  1. Carcinogenesis of Gα12

    Time frame: 3 years

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Study locations

1 of 1 sites recruiting
  • National Taiwan University Hospital research Ethics Committee
    Taipei, 10048, Taiwan
    • Shin-Jung Cheng, DDS, MS, PhD · Contact · sjcheng56@ntu.edu.tw · +886 2 29251733
    • Shin-Jung Cheng, DDS, MS, PhD · Principal investigator
    Recruiting
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References and documents

Publications

  • Dolezalova H, Shankar G, Huang MC, Bikle DD, Goetzl EJ. Biochemical regulation of breast cancer cell expression of S1P2 (Edg-5) and S1P3 (Edg-3) G protein-coupled receptors for sphingosine 1-phosphate. J Cell Biochem. 2003 Mar 1;88(4):732-43. doi: 10.1002/jcb.10394. PubMed 12577307 ↗
  • Dorsam RT, Gutkind JS. G-protein-coupled receptors and cancer. Nat Rev Cancer. 2007 Feb;7(2):79-94. doi: 10.1038/nrc2069. PubMed 17251915 ↗
  • Etienne-Manneville S, Hall A. Rho GTPases in cell biology. Nature. 2002 Dec 12;420(6916):629-35. doi: 10.1038/nature01148. PubMed 12478284 ↗
  • Friedl P, Wolf K. Tumour-cell invasion and migration: diversity and escape mechanisms. Nat Rev Cancer. 2003 May;3(5):362-74. doi: 10.1038/nrc1075. PubMed 12724734 ↗
  • Gilman AG. G proteins: transducers of receptor-generated signals. Annu Rev Biochem. 1987;56:615-49. doi: 10.1146/annurev.bi.56.070187.003151. No abstract available. PubMed 3113327 ↗
  • Gohla A, Offermanns S, Wilkie TM, Schultz G. Differential involvement of Galpha12 and Galpha13 in receptor-mediated stress fiber formation. J Biol Chem. 1999 Jun 18;274(25):17901-7. doi: 10.1074/jbc.274.25.17901. PubMed 10364236 ↗
  • Gu JL, Muller S, Mancino V, Offermanns S, Simon MI. Interaction of G alpha(12) with G alpha(13) and G alpha(q) signaling pathways. Proc Natl Acad Sci U S A. 2002 Jul 9;99(14):9352-7. doi: 10.1073/pnas.102291599. Epub 2002 Jun 20. PubMed 12077299 ↗
  • Meigs TE, Fedor-Chaiken M, Kaplan DD, Brackenbury R, Casey PJ. Galpha12 and Galpha13 negatively regulate the adhesive functions of cadherin. J Biol Chem. 2002 Jul 5;277(27):24594-600. doi: 10.1074/jbc.M201984200. Epub 2002 Apr 25. PubMed 11976333 ↗
  • Moers A, Nurnberg A, Goebbels S, Wettschureck N, Offermanns S. Galpha12/Galpha13 deficiency causes localized overmigration of neurons in the developing cerebral and cerebellar cortices. Mol Cell Biol. 2008 Mar;28(5):1480-8. doi: 10.1128/MCB.00651-07. Epub 2007 Dec 17. PubMed 18086886 ↗
  • Parks S, Wieschaus E. The Drosophila gastrulation gene concertina encodes a G alpha-like protein. Cell. 1991 Jan 25;64(2):447-58. doi: 10.1016/0092-8674(91)90652-f. PubMed 1899050 ↗
  • Radeff-Huang J, Seasholtz TM, Matteo RG, Brown JH. G protein mediated signaling pathways in lysophospholipid induced cell proliferation and survival. J Cell Biochem. 2004 Aug 1;92(5):949-66. doi: 10.1002/jcb.20094. PubMed 15258918 ↗
  • Radhika V, Hee Ha J, Jayaraman M, Tsim ST, Dhanasekaran N. Mitogenic signaling by lysophosphatidic acid (LPA) involves Galpha12. Oncogene. 2005 Jun 30;24(28):4597-603. doi: 10.1038/sj.onc.1208665. PubMed 15856019 ↗
  • Xu J, Wang F, Van Keymeulen A, Herzmark P, Straight A, Kelly K, Takuwa Y, Sugimoto N, Mitchison T, Bourne HR. Divergent signals and cytoskeletal assemblies regulate self-organizing polarity in neutrophils. Cell. 2003 Jul 25;114(2):201-14. doi: 10.1016/s0092-8674(03)00555-5. PubMed 12887922 ↗
  • Yu YP, Landsittel D, Jing L, Nelson J, Ren B, Liu L, McDonald C, Thomas R, Dhir R, Finkelstein S, Michalopoulos G, Becich M, Luo JH. Gene expression alterations in prostate cancer predicting tumor aggression and preceding development of malignancy. J Clin Oncol. 2004 Jul 15;22(14):2790-9. doi: 10.1200/JCO.2004.05.158. PubMed 15254046 ↗
  • Buhl AM, Johnson NL, Dhanasekaran N, Johnson GL. G alpha 12 and G alpha 13 stimulate Rho-dependent stress fiber formation and focal adhesion assembly. J Biol Chem. 1995 Oct 20;270(42):24631-4. doi: 10.1074/jbc.270.42.24631. PubMed 7559569 ↗
  • Chan AM, Fleming TP, McGovern ES, Chedid M, Miki T, Aaronson SA. Expression cDNA cloning of a transforming gene encoding the wild-type G alpha 12 gene product. Mol Cell Biol. 1993 Feb;13(2):762-8. doi: 10.1128/mcb.13.2.762-768.1993. PubMed 8423800 ↗
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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Apr 15, 2014, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT01919580
Lead sponsor
National Taiwan University Hospital
Responsible party
Sponsor
First posted
Aug 9, 2013
Start date
Dec 2012
Primary completion
Apr 2014
Completion
Jul 2014 (estimated)
Last update
Apr 15, 2014

Study contacts

Shin-Jung Cheng, DDS, MS, PhD
Contact
sjcheng56@ntu.edu.tw
+886 2 29251733 ext. 67509
Shin-Jung Cheng, DDS, MS, PhD
principal investigator

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is status unknown, as verified in Apr 2014. You cannot join it, but the record below documents what was studied.

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