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Detection Technology of Peripheral Blood ctDNA Based on CRISPR/Cas and Gold Nanoparticles

1 november 2026 uppdaterad av: Tengfei Zhang, The First Affiliated Hospital of Zhengzhou University

This study tests a new, fast blood test that may help detect very small traces of tumor DNA in the bloodstream. When tumor cells die, they release small pieces of DNA called circulating tumor DNA (ctDNA) into the blood. Finding these pieces can help doctors diagnose cancer, monitor how well treatment is working, and detect cancer recurrence earlier. However, ctDNA is present in very small amounts and is hard to detect with current methods. Newer techniques such as next-generation sequencing (NGS) can find ctDNA, but they are expensive, require specialized laboratories, and take days to return results. This study evaluates a new testing method called "CRISPR/Cas12a combined with gold nanoparticle detection." This method uses a gene-editing protein (Cas12a) that can recognize a specific mutation in the BRCA1 gene and a gold nanoparticle-based readout that shows results within about 30 minutes, using portable equipment.

The main purpose of this study is to find out how accurate, sensitive, and specific this new test is compared with NGS, which is considered the gold standard. The study will also check whether the portable device works consistently across different hospitals and whether the test results match patients' responses to treatment.

The study will enroll adult cancer patients treated at participating hospitals and a group of healthy volunteers. All participants will provide about 3 mL of blood (less than one teaspoon). No additional invasive procedures or extra hospital visits are required beyond routine blood draws. For cancer patients, part of the blood sample will be tested with the new method and part will be tested with standard NGS, and the two results will be compared. Healthy volunteers' blood will be used to confirm that the test does not produce false positive results.

There is no direct physical harm from the test itself, since it is performed on blood samples in the laboratory. Participants will receive the ctDNA test free of charge, and their test results may help their doctors better understand their disease.

The results of this study may help develop a rapid, low-cost, bedside test for tumor DNA, which could improve cancer diagnosis and monitoring in the future.

Studieöversikt

Status

Har inte rekryterat ännu

Betingelser

Studietyp

Observationell

Inskrivning (Beräknad)

100

Kontakter och platser

Det här avsnittet innehåller kontaktuppgifter för dem som genomför studien och information om var denna studie genomförs.

Studiekontakt

Studieorter

    • Henan
      • Zhengzhou, Henan, Kina
        • The First Affiliated Hospital of Zhengzhou University
        • Kontakt:

Deltagandekriterier

Forskare letar efter personer som passar en viss beskrivning, så kallade behörighetskriterier. Några exempel på dessa kriterier är en persons allmänna hälsotillstånd eller tidigare behandlingar.

Urvalskriterier

Åldrar som är berättigade till studier

18 år och äldre (Vuxen, Äldre vuxen)

Tar emot friska volontärer

Ja

Kön som är behöriga för studier

Allt

Testmetod

Icke-sannolikhetsprov

Studera befolkning

The study population consists of two groups: (1) Cancer patients - adult patients with BRCA1-related tumors (e.g., breast, ovarian, or prostate cancer) receiving care at The First Affiliated Hospital of Zhengzhou University (lead site) and Sir Run Run Shaw Hospital, Zhejiang University (participating site), who agree to provide a peripheral blood sample; and (2) Healthy volunteers - adults without a history of cancer, recruited at the participating hospitals as the control group for specificity assessment. All participants provide written informed consent before enrollment. Participants are recruited based on the principles of voluntariness and fairness, without discrimination by race, gender, or socioeconomic status

Beskrivning

Inclusion Criteria:

  • Adults (≥18 years of age) diagnosed with a malignant tumor at one of the participating hospitals
  • Patients willing and able to provide written informed consent

Exclusion Criteria:

  • Patients who refuse or are unable to sign the informed consent form
  • Patients with severe hematologic or coagulation disorders that make blood collection infeasible
  • Healthy volunteers: adults (≥18 years) with no history of cancer, willing to provide written informed consent

Studieplan

Det här avsnittet ger detaljer om studieplanen, inklusive hur studien är utformad och vad studien mäter.

Hur är studien utformad?

Designdetaljer

  • Observationsmodeller: COHORT
  • Tidsperspektiv: PROSPECTIVE

Kohorter och interventioner

Grupp / Kohort
Cancer patients

Patients with BRCA1-related tumors (e.g., breast, ovarian, or prostate cancer) enrolled at participating hospitals. Approximately 3 mL of EDTA-anticoagulated peripheral blood is collected from each participant. Each sample is tested by both the investigational CRISPR/Cas12a-gold nanoparticle ctDNA detection method and next-generation sequencing (NGS, the gold standard reference), and the results of the two methods are compared to evaluate diagnostic accuracy and sensitivity.

Healthy Volunteers

Healthy adults without a history of cancer, enrolled as the control group for specificity assessment. Approximately 3 mL of EDTA-anticoagulated peripheral blood is collected from each participant and tested by the CRISPR/Cas12a-gold nanoparticle method to determine the false positive rate.

Vad mäter studien?

Primära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Diagnostic accuracy of the CRISPR/Cas12a-gold nanoparticle ctDNA test compared with NGS
Tidsram: through study completion, an average of 1 year

The agreement between the CRISPR/Cas12a-gold nanoparticle ctDNA detection method and next-generation sequencing (NGS, the gold standard reference) will be evaluated in tumor patient samples. Diagnostic accuracy is measured by the Kappa coefficient of concordance between the two methods, with Kappa ≥0.85 considered excellent agreement. Sensitivity (detection positive rate of 1 pM, 0.5 pM, and 0.1 pM target ctDNA samples; ≥95% considered qualified) and specificity (false positive rate in 50 healthy volunteer samples; ≤5% considered qualified) will also be assessed.

through study completion, an average of 1 year

Sekundära resultatmått

Resultatmått
Åtgärdsbeskrivning
Tidsram
Stability of the portable detection device across multiple centers
Tidsram: through study completion, an average of 1 year

Inter-site consistency of the portable device will be assessed by the coefficient of variation (CV) of the same batch of standard samples tested at multiple centers; CV ≤10% is considered qualified.

through study completion, an average of 1 year

Samarbetspartners och utredare

Det är här du hittar personer och organisationer som är involverade i denna studie.

Sponsor

Studieavstämningsdatum

Dessa datum spårar framstegen för inlämningar av studieposter och sammanfattande resultat till ClinicalTrials.gov. Studieposter och rapporterade resultat granskas av National Library of Medicine (NLM) för att säkerställa att de uppfyller specifika kvalitetskontrollstandarder innan de publiceras på den offentliga webbplatsen.

Studera stora datum

Studiestart (Beräknad)

21 januari 2027

Primärt slutförande (Beräknad)

1 december 2028

Avslutad studie (Beräknad)

1 december 2029

Studieregistreringsdatum

Först inskickad

23 oktober 2026

Först inskickad som uppfyllde QC-kriterierna

1 november 2026

Första postat (Faktisk)

4 november 2026

Uppdateringar av studier

Senaste uppdatering publicerad (Faktisk)

4 november 2026

Senaste inskickade uppdateringen som uppfyllde QC-kriterierna

1 november 2026

Senast verifierad

1 november 2026

Mer information

Termer relaterade till denna studie

Ytterligare relevanta MeSH-villkor

Andra studie-ID-nummer

  • 2026-KY-0225-003

Plan för individuella deltagardata (IPD)

Planerar du att dela individuella deltagardata (IPD)?

NEJ

Läkemedels- och apparatinformation, studiedokument

Studerar en amerikansk FDA-reglerad läkemedelsprodukt

Nej

Studerar en amerikansk FDA-reglerad produktprodukt

Nej

Denna information hämtades direkt från webbplatsen clinicaltrials.gov utan några ändringar. Om du har några önskemål om att ändra, ta bort eller uppdatera dina studieuppgifter, vänligen kontakta register@clinicaltrials.gov. Så snart en ändring har implementerats på clinicaltrials.gov, kommer denna att uppdateras automatiskt även på vår webbplats .