Clinical trial NCT02369601: PROMComplete for Determination of Rupture of Fetal Membranes
Official title: Clinical Evaluation of PRO-MComplete as an Aid in Determination of Rupture of Fetal Membranes
Study type: OBSERVATIONAL
Overall status: UNKNOWN
Conditions: Fetal Membranes, Premature Rupture
Keywords: amniorrhexis
Ruptured membranes
Alfa-fetoprotein
Lead sponsor: Pro-Lab Diagnostics
Sponsor class: INDUSTRY
First posted: 2015-02-24
Enrollment: 600
Sex: FEMALE
Minimum age (years): 18
Maximum age (years): 45
Standard ages: ADULT
Accepts healthy volunteers: no
Observational model: COHORT
Time perspective: PROSPECTIVE
Sampling method: PROBABILITY_SAMPLE
Study population: The study population will be women presenting with signs, symptoms or suspicion of membrane rupture at 20 to 42 weeks gestation.

Brief summary: Premature rupture of membranes refers to the rupture of the fetal membranes prior to the onset of labor. Premature rupture of membranes is associated with a number of neonatal and maternal complications including an increased incidence of perinatal mortality and intra-amniotic infection. There is a need for improved diagnostic testing because of limitations of the current methods.

PRO-MComplete is an immunochromatographic test that detects insulin growth factor binding protein 1 and alpha-fetoprotein in vaginal fluid as an indicator of membrane rupture.

Detailed description: Premature rupture of membranes (PROM) complicates approximately 8 % of pregnancies and is generally followed by the prompt onset of spontaneous labor and delivery. Preterm PROM complicates only 2 % of pregnancies but is associated with 40% of preterm deliveries and can result in significant neonatal morbidity and mortality (ACOG 2007). Intraamniotic infection has been shown to be commonly associated with preterm PROM, especially at earlier gestational ages (ACOG 2013). Currently, the diagnosis of PROM is based primarily on the patient's history and physical examination. The diagnosis of membrane rupture typically is confirmed by the visualization of amniotic fluid passing from the cervical canal and pooling in the vagina; a basic pH test of vaginal fluid; or arborization (ferning) of dried vaginal fluid, which is identified under microscopic evaluation (ACOG 2013).

The classic clinical presentation of PROM is a sudden "gush" of clear or pale yellow fluid from the vagina. However, many women describe intermittent or constant leaking of small amounts of fluid or just a sensation of wetness within the vagina or on the perineum (WHEC 2009).

However, the diagnosis of PROM is difficult if there is a slow fluid leak or any bleeding, or when the classic "gush of fluid "does not occur (Bornstein 2006).

Although ultrasonographically guided transabdominal instillation of indigo carmine dye and observation for fluid passage transvaginally is designated an "unequivocal" diagnostic method for confirmation of membrane rupture, this invasive test carries increased maternal and fetal risk (Mercer 2004). The absence of a non-invasive "gold standard" for the diagnosis of PROM has led to technically advanced biochemical markers for improved diagnosis (El-Messidi, 2010).

The AmniSure ROM (Rupture of Membranes) test received Food and Drug Administration 510(k) marketing clearance in 2003. A comparison study of AmniSure versus standard diagnostic methods for detection of ROM in 203 pregnant women suspected of ROM reported that the AmniSure test was highly accurate (sensitivity = 98.9 %, specificity = 100 %, and negative predictive value \[NPV\] = 99.1 %) in diagnosing ROM (Cousins et al, 2005). Test performance was calculated by comparing AmniSure results against clinical history, nitrazine and fern results, presence of pooling, ultrasound (US) evidence of oligohydramnios, and findings from repeated examinations.

Chen and Dudenhausen (2008) compared 2 rapid strip tests for the detection of amniotic fluid, based on the detection of insulin-like growth factor-binding protein-1 (IGFBP-1) and of PAMG-1. Samples of amniotic fluid were taken in 20 pregnant women between 31 3/7 and 41 2/7 gestational weeks at elective cesarean section before delivery of the newborn. These samples were diluted with 0.9 % saline solution in a dilution series down to concentrations of 1:320. Immunoassay strip tests were then compared in their ability to detect remaining concentrations of amniotic fluid. In 5 cases, both test methods showed the same results. In all remaining 15 cases, the test based on PAMG-1 proved to be superior by detecting amniotic fluid at least at one descending concentration below the test based on IGFBP-1.

PRO-MComplete proposes an alternative tool for adjuvant diagnosis of PROM by identification of Insulin-Like Growth Factor Binding Protein1 and Alpha Feto- Protein (AFP). The addition of AFP is projected to increase the sensitivity and specificity of PRO-MComplete over IGFBP-1 alone.

Eligibility criteria: Inclusion Criteria:

1. Subject has provided verbal and written informed consent to participate in the study.
2. 20-42 weeks of gestation.
3. Subject presents with signs and/or symptoms of premature rupture of membranes.
4. Subject age 18 (years) or older

Exclusion Criteria:

1. Placenta Previa
2. Presenting with vaginal bleeding
3. Intravaginal ultrasound with presence of transducer gel
4. Active labor
5. Imminent delivery
6. Intercourse within 24 hours
7. Cord prolapse

Primary outcomes:
measure: accuracy of Pro-mcomplete vs conventional testing for ruptured fetal membranes
timeFrame: up to 20 weeks
Secondary outcomes:
measure: Occurrence of discordant examination
timeFrame: up to 20 weeks
Other outcomes:
Locations:
city: Birmingham
country: United States
facility: University of Alabama Hospital
state: Alabama
city: Indianapolis
country: United States
facility: Indiana University
state: Indiana
city: Dallas
country: United States
facility: Methodist Hospital Dallas
state: Texas
city: San Antonio
country: United States
facility: University of Texas Health Sciences Center at San Antonio
state: Texas
city: San Antonio
country: United States
facility: Christus Santa Rosa Westover Hills
state: Texas
city: Salt Lake City
country: United States
facility: University of Utah Hospital
state: Utah
Study officials:
affiliation: Pro-Lab Diagnostic VP
name: Andrew Rae
role: STUDY_DIRECTOR
affiliation: Methodist Medical Center Dallas
name: Hector Chapa, M.D.
role: PRINCIPAL_INVESTIGATOR
References:
citation: ACOG Committee on Practice Bulletins-Obstetrics. ACOG Practice Bulletin No. 80: premature rupture of membranes. Clinical management guidelines for obstetrician-gynecologists. Obstet Gynecol. 2007 Apr;109(4):1007-19. doi: 10.1097/01.AOG.0000263888.69178.1f.
citation: Practice bulletins No. 139: premature rupture of membranes. Obstet Gynecol. 2013 Oct;122(4):918-930. doi: 10.1097/01.AOG.0000435415.21944.8f.
citation: Women's Health and Education Center, Obstetrics: Premature Rupture of Membranes: Diagnosis and Management. http://www.womenshealthsection.com/content/obs/obs021.php3 Accessed July 13, 2009
citation: Bornstein J, Geva A, Solt I, Fait V, Schoenfeld A, Shoham HK, Sobel J. Nonintrusive diagnosis of premature ruptured amniotic membranes using a novel polymer. Am J Perinatol. 2006 Aug;23(6):351-4. doi: 10.1055/s-2006-947159. Epub 2006 Jul 13.
citation: Mercer BM. Preterm premature rupture of the membranes: diagnosis and management. Clin Perinatol. 2004 Dec;31(4):765-82, vi. doi: 10.1016/j.clp.2004.06.004.
citation: El-Messidi A, Cameron A. Diagnosis of premature rupture of membranes: inspiration from the past and insights for the future. J Obstet Gynaecol Can. 2010 Jun;32(6):561-569. doi: 10.1016/S1701-2163(16)34525-X.
citation: Cousins LM, Smok DP, Lovett SM, Poeltler DM. AmniSure placental alpha microglobulin-1 rapid immunoassay versus standard diagnostic methods for detection of rupture of membranes. Am J Perinatol. 2005 Aug;22(6):317-20. doi: 10.1055/s-2005-870896.
citation: Chen FC, Dudenhausen JW. Comparison of two rapid strip tests based on IGFBP-1 and PAMG-1 for the detection of amniotic fluid. Am J Perinatol. 2008 Apr;25(4):243-6. doi: 10.1055/s-2008-1066876.