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Study of Oxytocin in Autism to Improve Reciprocal Social Behaviors

Phase II Study of Oxytocin in Autism to Improve Reciprocal Social Behaviors

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01944046
Acronym
SOARS-B
Enrollment
290
Registered
2013-09-17
Start date
2014-08-01
Completion date
2017-11-30
Last updated
2021-06-18

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Autism Spectrum Disorders

Keywords

autism, ASD, autistic, Asperger's, PDD-NOS, oxytocin

Brief summary

The purpose of this research study is to learn about the effects of supplemental intranasal oxytocin as a treatment for improving social difficulties in children and adolescents with autism. This study will also provide additional information about the safety and tolerability of intranasal oxytocin. Investigators expect oxytocin will increase social motivation, improving daily living skills and quality of life.

Detailed description

There is a tremendous unmet need for accessible treatments that address core symptoms of ASD and are safe for sustained use. The Study of Oxytocin in ASD to improve Reciprocal Social Behaviors or (SOARS-B) will test a very promising potential treatment-intranasal oxytocin-for ASD's fundamental social communication deficits in a large, group of verbal and nonverbal children. SOARS-B will also provide information about the regulation of DNA methylation and transcription of the oxytocin receptor gene (OXTR), as well as other genes relevant to oxytocin's CNS activity, as a function of time and in response to oxytocin treatment. These data will fill a key gap in our understanding of oxytocin's role in ASD and its ability to alter epigenetic modifications of the OXTR.

Interventions

DRUGDouble blind phase Placebo Nasal Spray

This nasal spray will contain all of the ingredients that are in the active oxytocin spray in the same quantities, except oxytocin will NOT be added to the solution. It will be packaged using the same container system as the active oxytocin nasal spray. Each bottle's label will have its own unique nonsequential randomly assigned number and not a lot number to facilitate masking. Dose titration will occur using exactly the same criteria and procedures as for active study drug.

DRUGdouble Blind Oxytocin Nasal Spray

Each insufflation will deliver 8 IU or 24 IU of oxytocin. A maximum of 3 insufflations at a time will be required. Dosing will be flexible between 8 IU/day and 80 IU/day, typically in two divided doses delivered in the morning and in the afternoon. Doses will typically increase by 8 IU twice daily (BID) at week 2 and weeks 4 and 8 until achieving the target dose of 24 IU BID at week 8. Subsequently doses may be increased in 8 IU BID increments ONLY at each visit until a maximum dose of 40 IU BID is achieved.Each bottle's label will have its own unique nonsequential randomly assigned number and not a lot number to facilitate masking. During the open label phase after approximately March 2019 the study used only the 24 IU /0.10 ml formulation and the maximum dose was 72 IU per day.

DRUGOpen Label intranasal oxytocin

All participants who completed the 24 week double blind phase were eligible to join a 24 week open label phase in which all participants received intranasal oxytocin

Sponsors

Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
CollaboratorNIH
Linmarie Sikich
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
QUADRUPLE (Subject, Caregiver, Investigator, Outcomes Assessor)

Masking description

Quadruple

Intervention model description

Randomized, Double-blind, placebo-controlled clinical trial for 24 weeks. Followed by 24 week open label treatment period in which ALL participants receive Oxytocin

Eligibility

Sex/Gender
ALL
Age
3 Years to 17 Years
Healthy volunteers
No

Inclusion criteria

* Be between the ages of 3 years 0 months and 17 years 11 months at the time of randomization * Be diagnosed by clinician experienced in assessment of ASD with autistic disorder, Asperger's syndrome, or PDD-NOS using DSM-V-TR criteria * Must have clinical diagnosis of ASD confirmed using the Autism Diagnostic Observation Scale (ADOS, Lord et al., 2001) * Must have clinical diagnosis of ASD confirmed using the Autism Diagnostic Interview-Revised (ADI-R, Rutter, 2003). ASD criteria proposed by Risi (2006). Specifically, subject must be within 1 point of autism criteria on both social and communication domains of the ADI or meet autism criteria in one of these ADI domains and come within 2 points of autism criteria in the other * Have a guardian who is able to provide informed consent * If cognitively able, subject must be able to provide informed assent/consent

Exclusion criteria

* Have a known diagnosis of Rett Syndrome or Childhood Disintegrative Disorder, or have marked sensory impairment such as deafness or blindness * Have active cardiovascular disease or renal disease that is not controlled by medication * Subjects who are pregnant, lactating, or who refuse to practice contraception if sexually active * Subjects who have had changes in allied health therapies, behavioral or educational interventions within the two months prior to randomization other than those associated with school holidays * Subjects who have had changes in psychiatric medications within 4 weeks of randomization * Subjects who have had previous chronic treatment with oxytocin * Subjects who have caretakers who are unable to speak English, be consistently present at visits to report on symptoms, or are otherwise judged as unable to comply with the protocol by the data collection site team * Subjects with active seizures within the 6 months preceding screening or baseline -added part way through study in response to subject death.

Design outcomes

Primary

MeasureTime frameDescription
Change in Aberrant Behavior Checklist-Modified Social Withdrawal Subscale ABC-mSW, a Measure of Social ReciprocityLeast Mean Squares Double-blind phase: change from baseline to week 24The primary outcome is Change in Aberrant Behavior Checklist-Modified Social Withdrawal subscale- a measure of reciprocal social behaviors. ABC-mSW is a modification of the ABC-Lethargy subscale. The ABC-mSW consists of the sum of questions 5,12,16, 20, 23, 26, 30, 37, 40, 42, 43, 55, and 58. In contrast to the ABC-Lethargy subscale it eliminates question 3 (listless, sluggish, inactive), question 32 (sits or stands in one position for a long time), and question 53 (inactive, never moves spontaneously). Thirteen individual items are scored 0-3, therefore the range is 0-39. Higher score indicates lower social reciprocity. Repeated measures were obtained at baseline, weeks 4, 8, 12, 16, 20, 24.

Secondary

MeasureTime frameDescription
Change in Sociability Factor (SF)Double-blind phase: change in least means squares between week 0 & 24.The Sociability Factor (SF) is a summed measure of the13 items of the ABC-SW and the 18 items of the Pervasive Development Disorders Behavior Inventory-Screening Version (PDDBI-SV).The PDDBI-SV assesses both adaptive social behaviors and social problems typical of ASD. The adaptive behaviors are reverse scored so that all the analyzed scores range from 0-performing in a neurotypical fashion to 3 typically performs in a way associated with ASD. the total # of items on this summed measure is 31 with a range from 0 to 93. More impaired social functioning indicated by higher scores. This measure was changed to a secondary outcome in the final statistical analysis plan.
Change in Social Responsiveness Scale-2 (SRS-2) Social Motivation Subscale ScoreDouble-blind phase: baseline, weeks 12, 24The SRS-Social Motivation subscale was developed to provide a quantitative measure of social impairments typically observed in ASD in children 3-18 years. Reported as T-score with a range of 38-90 for both boys and girls. Higher score indicates more severe clinical condition. Lower value in change indicates more improvement.
Change in Stanford Binet-5th Edition (SB-5) IQ ScoreDouble-blind phase: baseline to week 24Cognitive skills will be assessed using the Stanford Binet-5th Edition (SB-5) (Roid). Acceptable IQ range is 47-153, with higher score being better. Higher change scores indicate more improvement.

Other

MeasureTime frameDescription
Change in Caregiver Strain Questionnaire (CSQ) Subjective Internalizing Subscale ScoreDouble-blind phase: baseline, week 24Caregiver questionnaire that assesses the impact of caring for the proband on caregiver and family. CSQ subscale scores are ranged from 1 to 5. with each item of the subscale having the same range, the sum of the items within the subscale are summed, and the mean score is determined (I.e. a single # between 1 and 5) and reported. Higher scores indicate more caregiver strain. Lower value in change indicates more improvement.
Change in Vineland II Adaptive Behavior Scales (VABS-II) Socialization Domain ScoreDouble-blind phase: baseline, week 24; Open Label: week 48Functional skills will be assessed using the VABS-II Socialization Domain Score. Uses standard score with a mean of 100 and SD of 15 with a range of 20-160. Higher score is better. Higher value in change indicates more improvement.
Change in Caregiver Strain Questionnaire (CSQ) Objective Subscale ScoreDouble-blind phase: baseline, week 24; Open Label: week 48Caregiver questionnaire that assesses the impact of caring for the proband on caregiver and family. CSQ subscale scores are ranged from 1 to 5. Higher score indicates more caregiver strain. Lower value in change indicates more improvement. The analysis directions for the instrument that are used in these analyses are the mean of all the responses in the scale or subscale.
Social Responsiveness Scale-2 (SRS-2) Social Motivation Subscale ScoreOpen Label: weeks 24, 48The SRS-Social Motivation subscale was developed to provide a quantitative measure of social impairments typically observed in ASD in children 3-18 years. Reported as T-score with a range of 38-90 for both boys and girls. Higher score indicates more severe clinical condition. Lower value in change indicates more improvement.
Change in Vineland II Adaptive Behavior Scales (VABS-II) Composite ScoreDouble-blind phase: baseline, week 24Functional skills including communication will be assessed using the VABS-II Adaptive Behavior Composite Score. Uses standard score with a mean of 100 and SD of 15 with a range of 20-160. Higher score is better. Higher value in change indicates more improvement.
Change in Clinical Global Impressions -Improvement Score (CGI-I)Double blind phase: change from Baseline to week 12, and week 24. Open label phase change from week 24 to week 48The Clinical Global Impressions - Improvement score and Severity score, which is routinely used in pharmacologic clinical trials, will capture the study physician's global impression of response. scores of 1 and 2 are considered as a percentage of total subjects in arm
Reading Mind in the Eyes Test is an Objective Measures of the Extent to Which Verbal Participants With Rudimentary Knowledge of Emotion Names Are Able to Correctly Identify the Emotion Shown in a Black and White Picture of the Eyes and Nose of an Actor.Double blind phase: change from Baseline and week 24. Note: only those who demonstrated understanding of these concepts were included in sample.This computerized task consists of a series of pictures of eyes in which the participant needs to determine which emotion the eyes are expressing from 4 emotions listed along with the picture. The outcome is the % of pictures with correct emotion identified. The range is 0 to 100%. The larger percent identified correctly indicates better ability to perceive emotions. An increase or positive change indicates better ability to identify emotions since baseline.
Change in Caregiver Strain Questionnaire (CSQ) Subjective Externalizing Subscale ScoreDouble-blind phase: baseline, week 24; Open Label: week 48Caregiver questionnaire that assesses the impact of caring for the proband on caregiver and family. CSQ subscale scores are ranged from 1 to 5. Higher score indicates more caregiver strain. Lower value in change indicates more improvement.
Change in Vineland II Adaptive Behavior Scales (VABS-II) Daily Living Domain ScoreDouble-blind phase: baseline, week 24; Open Label: week 48Functional skills will be assessed using the VABS-II Daily Living Domain Score. Uses standard score with a mean of 100 and SD of 15 with a range of 20-160. Higher score is better. Higher value in change indicates more improvement.
Caregiver Strain Questionnaire (CSQ) Subjective Internalizing Subscale Mean ScoreOpen Label: weeks 24, 48Caregiver questionnaire that assesses the impact of caring for the proband on caregiver and family. Each item on the subjective internalizing CSQ subscale is rated from 1 to 5. Then all items within the subscale are summed and the mean is determined based on the number of items in the subscale. Higher score indicates more caregiver strain. Lower value in change indicates more improvement.
Change in Vineland II Adaptive Behavior Scales (VABS-II) Communication Domain ScoreDouble-blind phase: baseline, week 24; Open Label: week 48Functional skills will be assessed using the VABS-II Communication Domain Score. Uses standard score with a mean of 100 and SD of 15 with a range of 20-160. Higher score is better. Higher value in change indicates more improvement.

Countries

United States

Participant flow

Participants by arm

ArmCount
Oxytocin Nasal Spray
Oxytocin Oxytocin Nasal Spray: Each insufflation will deliver 8 IU or 24 IU of oxytocin. A maximum of 3 insufflations at a time will be required. Dosing will be flexible between 8 IU/day and 80 IU/day, typically in two divided doses delivered in the morning and in the afternoon. Doses will typically increase by 8 IU twice daily (BID) at week 2 and weeks 4 and 8 until achieving the target dose of 24 IU BID at week 8. Subsequently doses may be increased in 8 IU BID increments ONLY at each visit until a maximum dose of 40 IU BID is achieved.Each bottle's label will have its own unique nonsequential randomly assigned number and not a lot number to facilitate masking. During the open label phase after approximately March 2019 the study used only the 24 IU /0.10 ml formulation and the maximum dose was 72 IU per day.
139
Placebo Nasal Spray
Placebo Placebo Nasal Spray: This nasal spray will contain all of the ingredients that are in the active oxytocin spray in the same quantities, except there will be no oxytocin added to the solution. It will be packaged using the same container system as the active oxytocin nasal spray. Each bottle's label will have its own unique nonsequential randomly assigned number and not a lot number to facilitate masking. Dose titration will occur using exactly the same criteria and procedures as for active study drug.
138
Total277

Withdrawals & dropouts

PeriodReasonFG000FG001
Open Label Eligible and ConsentedAdverse Event61
Open Label Eligible and ConsentedClinical Worsening42
Open Label Eligible and ConsentedLost to Follow-up35
Open Label Eligible and ConsentedWithdrawal by Subject10
Randomized to DBAdverse Event52
Randomized to DBClinical Worsening32
Randomized to DBDid not have a postbaseline ABC SW56
Randomized to DBDid not have baseline ABC-SW20
Randomized to DBLost to Follow-up33
Randomized to DBPhysician Decision12
Randomized to DBWithdrawal by Subject24

Baseline characteristics

CharacteristicTotalPlacebo Nasal SprayOxytocin Nasal Spray
Aberrant Behavior Checklist Social Withdrawal Subscale Score (ABC-SW) abc-SW (mean11.3 units on a scale
STANDARD_DEVIATION 7.4
11.6 units on a scale
STANDARD_DEVIATION 7.8
11.0 units on a scale
STANDARD_DEVIATION 6.9
Age, Continuous10.4 years
STANDARD_DEVIATION 4.04
10.4 years
STANDARD_DEVIATION 3.99
10.4 years
STANDARD_DEVIATION 4.06
Ethnicity (NIH/OMB)
Hispanic or Latino
28 Participants15 Participants13 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
249 Participants123 Participants126 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
23 Participants12 Participants11 Participants
Race (NIH/OMB)
Black or African American
23 Participants14 Participants9 Participants
Race (NIH/OMB)
More than one race
23 Participants9 Participants14 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
4 Participants3 Participants1 Participants
Race (NIH/OMB)
White
204 Participants100 Participants104 Participants
Region of Enrollment
United States
277 Participants138 Participants139 Participants
Sex: Female, Male
Female
35 Participants18 Participants17 Participants
Sex: Female, Male
Male
242 Participants120 Participants122 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
deaths
Total, all-cause mortality
0 / 1460 / 1441 / 1270 / 122
other
Total, other adverse events
120 / 146120 / 14491 / 12792 / 122
serious
Total, serious adverse events
2 / 1461 / 1444 / 1270 / 122

Outcome results

Primary

Change in Aberrant Behavior Checklist-Modified Social Withdrawal Subscale ABC-mSW, a Measure of Social Reciprocity

The primary outcome is Change in Aberrant Behavior Checklist-Modified Social Withdrawal subscale- a measure of reciprocal social behaviors. ABC-mSW is a modification of the ABC-Lethargy subscale. The ABC-mSW consists of the sum of questions 5,12,16, 20, 23, 26, 30, 37, 40, 42, 43, 55, and 58. In contrast to the ABC-Lethargy subscale it eliminates question 3 (listless, sluggish, inactive), question 32 (sits or stands in one position for a long time), and question 53 (inactive, never moves spontaneously). Thirteen individual items are scored 0-3, therefore the range is 0-39. Higher score indicates lower social reciprocity. Repeated measures were obtained at baseline, weeks 4, 8, 12, 16, 20, 24.

Time frame: Least Mean Squares Double-blind phase: change from baseline to week 24

Population: Full Analysis Set

ArmMeasureGroupValue (MEAN)Dispersion
Oxytocin Nasal SprayChange in Aberrant Behavior Checklist-Modified Social Withdrawal Subscale ABC-mSW, a Measure of Social ReciprocityDouble-blind baseline to w48.81 score on a scaleStandard Error 0.39
Oxytocin Nasal SprayChange in Aberrant Behavior Checklist-Modified Social Withdrawal Subscale ABC-mSW, a Measure of Social ReciprocityDouble-blind baseline to w88.97 score on a scaleStandard Error 0.45
Oxytocin Nasal SprayChange in Aberrant Behavior Checklist-Modified Social Withdrawal Subscale ABC-mSW, a Measure of Social ReciprocityDouble-blind baseline-w127.48 score on a scaleStandard Error 0.43
Oxytocin Nasal SprayChange in Aberrant Behavior Checklist-Modified Social Withdrawal Subscale ABC-mSW, a Measure of Social ReciprocityDB w0- w167.99 score on a scaleStandard Error 0.46
Oxytocin Nasal SprayChange in Aberrant Behavior Checklist-Modified Social Withdrawal Subscale ABC-mSW, a Measure of Social ReciprocityDB w0- w207.81 score on a scaleStandard Error 0.05
Oxytocin Nasal SprayChange in Aberrant Behavior Checklist-Modified Social Withdrawal Subscale ABC-mSW, a Measure of Social ReciprocityDB w0-w247.75 score on a scaleStandard Error 0.46
Placebo Nasal SprayChange in Aberrant Behavior Checklist-Modified Social Withdrawal Subscale ABC-mSW, a Measure of Social ReciprocityDB w0- w207.75 score on a scaleStandard Error 0.45
Placebo Nasal SprayChange in Aberrant Behavior Checklist-Modified Social Withdrawal Subscale ABC-mSW, a Measure of Social ReciprocityDouble-blind baseline to w48.68 score on a scaleStandard Error 0.39
Placebo Nasal SprayChange in Aberrant Behavior Checklist-Modified Social Withdrawal Subscale ABC-mSW, a Measure of Social ReciprocityDB w0- w168.04 score on a scaleStandard Error 0.46
Placebo Nasal SprayChange in Aberrant Behavior Checklist-Modified Social Withdrawal Subscale ABC-mSW, a Measure of Social ReciprocityDouble-blind baseline to w88.68 score on a scaleStandard Error 0.45
Placebo Nasal SprayChange in Aberrant Behavior Checklist-Modified Social Withdrawal Subscale ABC-mSW, a Measure of Social ReciprocityDB w0-w248.05 score on a scaleStandard Error 0.46
Placebo Nasal SprayChange in Aberrant Behavior Checklist-Modified Social Withdrawal Subscale ABC-mSW, a Measure of Social ReciprocityDouble-blind baseline-w128.13 score on a scaleStandard Error 0.43
p-value: 0.503Mixed Models Analysis
Primary

Change in Aberrant Behavior Checklist-Modified Social Withdrawal Subscale ABC-mSW, a Measure of Social Reciprocity

The ABC-mSW is described above and involves 13 items reflecting lack of reciprocal interaction. Each item is scored from 0 (never shows behavior) to 3 (behavior is a major problem). The range is 0-39. Higher scores indicate worse reciprocal social functioning.

Time frame: Least mean squares for Open Label: Change between weeks 24-48

Population: Open Label phase participants in OLE FAS excluding 2 participants without usable ABC-sws (either w24 or at least one pw24 ABC-sw.

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)
Oxytocin Nasal SprayChange in Aberrant Behavior Checklist-Modified Social Withdrawal Subscale ABC-mSW, a Measure of Social ReciprocityOpen Label week 247.83 score on a scale
Oxytocin Nasal SprayChange in Aberrant Behavior Checklist-Modified Social Withdrawal Subscale ABC-mSW, a Measure of Social ReciprocityOpen Label week 486.99 score on a scale
Placebo Nasal SprayChange in Aberrant Behavior Checklist-Modified Social Withdrawal Subscale ABC-mSW, a Measure of Social ReciprocityOpen Label week 247.81 score on a scale
Placebo Nasal SprayChange in Aberrant Behavior Checklist-Modified Social Withdrawal Subscale ABC-mSW, a Measure of Social ReciprocityOpen Label week 486.78 score on a scale
p-value: 0.61Mixed Models Analysis
Secondary

Change in Sociability Factor (SF)

The Sociability Factor (SF) is a summed measure of the13 items of the ABC-SW and the 18 items of the Pervasive Development Disorders Behavior Inventory-Screening Version (PDDBI-SV).The PDDBI-SV assesses both adaptive social behaviors and social problems typical of ASD. The adaptive behaviors are reverse scored so that all the analyzed scores range from 0-performing in a neurotypical fashion to 3 typically performs in a way associated with ASD. the total # of items on this summed measure is 31 with a range from 0 to 93. More impaired social functioning indicated by higher scores. This measure was changed to a secondary outcome in the final statistical analysis plan.

Time frame: Double-blind phase: change in least means squares between week 0 & 24.

Population: Full Analysis Set

ArmMeasureGroupValue (LEAST_SQUARES_MEAN)Dispersion
Oxytocin Nasal SprayChange in Sociability Factor (SF)DB w0-w8-5.99 score on a scaleStandard Error 0.66
Oxytocin Nasal SprayChange in Sociability Factor (SF)DB w0-w16-6.82 score on a scaleStandard Error 0.7
Oxytocin Nasal SprayChange in Sociability Factor (SF)DB w0-w4-5.57 score on a scaleStandard Error 0.69
Oxytocin Nasal SprayChange in Sociability Factor (SF)DB w0-w20-7.24 score on a scaleStandard Error 0.88
Oxytocin Nasal SprayChange in Sociability Factor (SF)DB w0-w12-6.40 score on a scaleStandard Error 0.66
Oxytocin Nasal SprayChange in Sociability Factor (SF)DB w0-w24-7.66 score on a scaleStandard Error 0.78
Oxytocin Nasal SprayChange in Sociability Factor (SF)DB w035.8 score on a scaleStandard Error 1.24
Placebo Nasal SprayChange in Sociability Factor (SF)DB w0-w24-8.27 score on a scaleStandard Error 0.88
Placebo Nasal SprayChange in Sociability Factor (SF)DB w036.1 score on a scaleStandard Error 1.28
Placebo Nasal SprayChange in Sociability Factor (SF)DB w0-w4-5.81 score on a scaleStandard Error 0.69
Placebo Nasal SprayChange in Sociability Factor (SF)DB w0-w8-6.30 score on a scaleStandard Error 0.66
Placebo Nasal SprayChange in Sociability Factor (SF)DB w0-w12-6.79 score on a scaleStandard Error 0.66
Placebo Nasal SprayChange in Sociability Factor (SF)DB w0-w16-7.28 score on a scaleStandard Error 0.71
Placebo Nasal SprayChange in Sociability Factor (SF)DB w0-w20-7.77 score on a scaleStandard Error 0.88
Secondary

Change in Social Responsiveness Scale-2 (SRS-2) Social Motivation Subscale Score

The SRS-Social Motivation subscale was developed to provide a quantitative measure of social impairments typically observed in ASD in children 3-18 years. Reported as T-score with a range of 38-90 for both boys and girls. Higher score indicates more severe clinical condition. Lower value in change indicates more improvement.

Time frame: Double-blind phase: baseline, weeks 12, 24

Population: Full Analysis Set

ArmMeasureGroupValue (MEAN)Dispersion
Oxytocin Nasal SprayChange in Social Responsiveness Scale-2 (SRS-2) Social Motivation Subscale ScoreDouble-blind baseline to week 12-4.58 T-scoreStandard Deviation 0.68
Oxytocin Nasal SprayChange in Social Responsiveness Scale-2 (SRS-2) Social Motivation Subscale ScoreDouble-blind baseline to week 24-4.49 T-scoreStandard Deviation 0.7
Placebo Nasal SprayChange in Social Responsiveness Scale-2 (SRS-2) Social Motivation Subscale ScoreDouble-blind baseline to week 12-5.72 T-scoreStandard Deviation 0.69
Placebo Nasal SprayChange in Social Responsiveness Scale-2 (SRS-2) Social Motivation Subscale ScoreDouble-blind baseline to week 24-5.42 T-scoreStandard Deviation 0.7
Secondary

Change in Stanford Binet-5th Edition (SB-5) IQ Score

Cognitive skills will be assessed using the Stanford Binet-5th Edition (SB-5) (Roid). Acceptable IQ range is 47-153, with higher score being better. Higher change scores indicate more improvement.

Time frame: Double-blind phase: baseline to week 24

Population: Participants with scores collected at baseline and week 24.

ArmMeasureValue (MEAN)Dispersion
Oxytocin Nasal SprayChange in Stanford Binet-5th Edition (SB-5) IQ Score0.40 score on a scaleStandard Deviation 11.64
Placebo Nasal SprayChange in Stanford Binet-5th Edition (SB-5) IQ Score1.0 score on a scaleStandard Deviation 10.84
Other Pre-specified

Caregiver Strain Questionnaire (CSQ) Subjective Internalizing Subscale Mean Score

Caregiver questionnaire that assesses the impact of caring for the proband on caregiver and family. Each item on the subjective internalizing CSQ subscale is rated from 1 to 5. Then all items within the subscale are summed and the mean is determined based on the number of items in the subscale. Higher score indicates more caregiver strain. Lower value in change indicates more improvement.

Time frame: Open Label: weeks 24, 48

Population: Full Analysis Set participants who entered double blind and have values at week 24 AND 48

ArmMeasureGroupValue (MEAN)Dispersion
Oxytocin Nasal SprayCaregiver Strain Questionnaire (CSQ) Subjective Internalizing Subscale Mean ScoreOpen Label week 242.96 mean score on a scaleStandard Deviation 0.99
Oxytocin Nasal SprayCaregiver Strain Questionnaire (CSQ) Subjective Internalizing Subscale Mean ScoreOpen Label week 482.97 mean score on a scaleStandard Deviation 0.99
Placebo Nasal SprayCaregiver Strain Questionnaire (CSQ) Subjective Internalizing Subscale Mean ScoreOpen Label week 242.85 mean score on a scaleStandard Deviation 1
Placebo Nasal SprayCaregiver Strain Questionnaire (CSQ) Subjective Internalizing Subscale Mean ScoreOpen Label week 482.85 mean score on a scaleStandard Deviation 0.97
Other Pre-specified

Change in Caregiver Strain Questionnaire (CSQ) Objective Subscale Score

Caregiver questionnaire that assesses the impact of caring for the proband on caregiver and family. CSQ subscale scores are ranged from 1 to 5. Higher score indicates more caregiver strain. Lower value in change indicates more improvement. The analysis directions for the instrument that are used in these analyses are the mean of all the responses in the scale or subscale.

Time frame: Double-blind phase: baseline, week 24; Open Label: week 48

Population: Full Analysis Set

ArmMeasureGroupValue (MEAN)Dispersion
Oxytocin Nasal SprayChange in Caregiver Strain Questionnaire (CSQ) Objective Subscale ScoreDouble-blind baseline to week 24-0.16 score on a scaleStandard Error 0.06
Oxytocin Nasal SprayChange in Caregiver Strain Questionnaire (CSQ) Objective Subscale ScoreOpen Label week 24 to week 480.13 score on a scaleStandard Error 0.06
Placebo Nasal SprayChange in Caregiver Strain Questionnaire (CSQ) Objective Subscale ScoreDouble-blind baseline to week 24-0.22 score on a scaleStandard Error 0.06
Placebo Nasal SprayChange in Caregiver Strain Questionnaire (CSQ) Objective Subscale ScoreOpen Label week 24 to week 480.44 score on a scaleStandard Error 0.08
Other Pre-specified

Change in Caregiver Strain Questionnaire (CSQ) Subjective Externalizing Subscale Score

Caregiver questionnaire that assesses the impact of caring for the proband on caregiver and family. CSQ subscale scores are ranged from 1 to 5. Higher score indicates more caregiver strain. Lower value in change indicates more improvement.

Time frame: Double-blind phase: baseline, week 24; Open Label: week 48

Population: Full Analysis Set

ArmMeasureGroupValue (MEAN)Dispersion
Oxytocin Nasal SprayChange in Caregiver Strain Questionnaire (CSQ) Subjective Externalizing Subscale ScoreDouble-blind baseline to week 24-0.08 score on a scaleStandard Error 0.04
Oxytocin Nasal SprayChange in Caregiver Strain Questionnaire (CSQ) Subjective Externalizing Subscale ScoreOpen Label week 24 to week 480.01 score on a scaleStandard Error 0.07
Placebo Nasal SprayChange in Caregiver Strain Questionnaire (CSQ) Subjective Externalizing Subscale ScoreDouble-blind baseline to week 24-0.04 score on a scaleStandard Error 0.04
Placebo Nasal SprayChange in Caregiver Strain Questionnaire (CSQ) Subjective Externalizing Subscale ScoreOpen Label week 24 to week 480 score on a scaleStandard Error 0.08
Other Pre-specified

Change in Caregiver Strain Questionnaire (CSQ) Subjective Internalizing Subscale Score

Caregiver questionnaire that assesses the impact of caring for the proband on caregiver and family. CSQ subscale scores are ranged from 1 to 5. with each item of the subscale having the same range, the sum of the items within the subscale are summed, and the mean score is determined (I.e. a single # between 1 and 5) and reported. Higher scores indicate more caregiver strain. Lower value in change indicates more improvement.

Time frame: Double-blind phase: baseline, week 24

Population: Full Analysis Set

ArmMeasureValue (MEAN)Dispersion
Oxytocin Nasal SprayChange in Caregiver Strain Questionnaire (CSQ) Subjective Internalizing Subscale Score-0.16 score on a scaleStandard Error 0.07
Placebo Nasal SprayChange in Caregiver Strain Questionnaire (CSQ) Subjective Internalizing Subscale Score-0.29 score on a scaleStandard Error 0.07
Other Pre-specified

Change in Clinical Global Impressions -Improvement Score (CGI-I)

The Clinical Global Impressions - Improvement score and Severity score, which is routinely used in pharmacologic clinical trials, will capture the study physician's global impression of response. scores of 1 and 2 are considered as a percentage of total subjects in arm

Time frame: Double blind phase: change from Baseline to week 12, and week 24. Open label phase change from week 24 to week 48

Population: full analysis set

ArmMeasureValue (NUMBER)
Oxytocin Nasal SprayChange in Clinical Global Impressions -Improvement Score (CGI-I)64 percentage of participants in arm
Placebo Nasal SprayChange in Clinical Global Impressions -Improvement Score (CGI-I)53 percentage of participants in arm
Other Pre-specified

Change in Vineland II Adaptive Behavior Scales (VABS-II) Communication Domain Score

Functional skills will be assessed using the VABS-II Communication Domain Score. Uses standard score with a mean of 100 and SD of 15 with a range of 20-160. Higher score is better. Higher value in change indicates more improvement.

Time frame: Double-blind phase: baseline, week 24; Open Label: week 48

Population: Full Analysis Set

ArmMeasureGroupValue (MEAN)Dispersion
Oxytocin Nasal SprayChange in Vineland II Adaptive Behavior Scales (VABS-II) Communication Domain ScoreDouble-blind baseline to week 243.88 score on a scaleStandard Error 0.89
Oxytocin Nasal SprayChange in Vineland II Adaptive Behavior Scales (VABS-II) Communication Domain ScoreOpen Label week 24 to week 484.06 score on a scaleStandard Error 1.35
Placebo Nasal SprayChange in Vineland II Adaptive Behavior Scales (VABS-II) Communication Domain ScoreDouble-blind baseline to week 242.27 score on a scaleStandard Error 0.9
Placebo Nasal SprayChange in Vineland II Adaptive Behavior Scales (VABS-II) Communication Domain ScoreOpen Label week 24 to week 485.98 score on a scaleStandard Error 1.41
Other Pre-specified

Change in Vineland II Adaptive Behavior Scales (VABS-II) Composite Score

Functional skills including communication will be assessed using the VABS-II Adaptive Behavior Composite Score. Uses standard score with a mean of 100 and SD of 15 with a range of 20-160. Higher score is better. Higher value in change indicates more improvement.

Time frame: Double-blind phase: baseline, week 24

Population: Full Analysis Set

ArmMeasureValue (MEAN)Dispersion
Oxytocin Nasal SprayChange in Vineland II Adaptive Behavior Scales (VABS-II) Composite Score2.61 score on a scaleStandard Deviation 1.26
Placebo Nasal SprayChange in Vineland II Adaptive Behavior Scales (VABS-II) Composite Score1.50 score on a scaleStandard Deviation 1.27
Other Pre-specified

Change in Vineland II Adaptive Behavior Scales (VABS-II) Daily Living Domain Score

Functional skills will be assessed using the VABS-II Daily Living Domain Score. Uses standard score with a mean of 100 and SD of 15 with a range of 20-160. Higher score is better. Higher value in change indicates more improvement.

Time frame: Double-blind phase: baseline, week 24; Open Label: week 48

Population: Full Analysis Set

ArmMeasureGroupValue (MEAN)Dispersion
Oxytocin Nasal SprayChange in Vineland II Adaptive Behavior Scales (VABS-II) Daily Living Domain ScoreDouble-blind baseline to week 242.50 score on a scaleStandard Error 1.1
Oxytocin Nasal SprayChange in Vineland II Adaptive Behavior Scales (VABS-II) Daily Living Domain ScoreOpen Label week 24 to week 481.76 score on a scaleStandard Error 1.19
Placebo Nasal SprayChange in Vineland II Adaptive Behavior Scales (VABS-II) Daily Living Domain ScoreDouble-blind baseline to week 241.24 score on a scaleStandard Error 1.14
Placebo Nasal SprayChange in Vineland II Adaptive Behavior Scales (VABS-II) Daily Living Domain ScoreOpen Label week 24 to week 480.62 score on a scaleStandard Error 0.11
Other Pre-specified

Change in Vineland II Adaptive Behavior Scales (VABS-II) Socialization Domain Score

Functional skills will be assessed using the VABS-II Socialization Domain Score. Uses standard score with a mean of 100 and SD of 15 with a range of 20-160. Higher score is better. Higher value in change indicates more improvement.

Time frame: Double-blind phase: baseline, week 24; Open Label: week 48

Population: Full Analysis Set

ArmMeasureGroupValue (MEAN)Dispersion
Oxytocin Nasal SprayChange in Vineland II Adaptive Behavior Scales (VABS-II) Socialization Domain ScoreDouble-blind baseline to week 244.45 score on a scaleStandard Error 1.27
Oxytocin Nasal SprayChange in Vineland II Adaptive Behavior Scales (VABS-II) Socialization Domain ScoreOpen Label week 24 to week 481.59 score on a scaleStandard Error 1.11
Placebo Nasal SprayChange in Vineland II Adaptive Behavior Scales (VABS-II) Socialization Domain ScoreDouble-blind baseline to week 244.87 score on a scaleStandard Error 1.25
Placebo Nasal SprayChange in Vineland II Adaptive Behavior Scales (VABS-II) Socialization Domain ScoreOpen Label week 24 to week 480.54 score on a scaleStandard Error 1.1
Other Pre-specified

Reading Mind in the Eyes Test is an Objective Measures of the Extent to Which Verbal Participants With Rudimentary Knowledge of Emotion Names Are Able to Correctly Identify the Emotion Shown in a Black and White Picture of the Eyes and Nose of an Actor.

This computerized task consists of a series of pictures of eyes in which the participant needs to determine which emotion the eyes are expressing from 4 emotions listed along with the picture. The outcome is the % of pictures with correct emotion identified. The range is 0 to 100%. The larger percent identified correctly indicates better ability to perceive emotions. An increase or positive change indicates better ability to identify emotions since baseline.

Time frame: Double blind phase: change from Baseline and week 24. Note: only those who demonstrated understanding of these concepts were included in sample.

Population: only subjects who could define feelings from fluently verbal subgroup

ArmMeasureGroupValue (MEAN)Dispersion
Oxytocin Nasal SprayReading Mind in the Eyes Test is an Objective Measures of the Extent to Which Verbal Participants With Rudimentary Knowledge of Emotion Names Are Able to Correctly Identify the Emotion Shown in a Black and White Picture of the Eyes and Nose of an Actor.DB w051.1 percentage of correct responsesStandard Deviation 18.76
Oxytocin Nasal SprayReading Mind in the Eyes Test is an Objective Measures of the Extent to Which Verbal Participants With Rudimentary Knowledge of Emotion Names Are Able to Correctly Identify the Emotion Shown in a Black and White Picture of the Eyes and Nose of an Actor.DB w2454.9 percentage of correct responsesStandard Deviation 14.02
Placebo Nasal SprayReading Mind in the Eyes Test is an Objective Measures of the Extent to Which Verbal Participants With Rudimentary Knowledge of Emotion Names Are Able to Correctly Identify the Emotion Shown in a Black and White Picture of the Eyes and Nose of an Actor.DB w048.2 percentage of correct responsesStandard Deviation 18.61
Placebo Nasal SprayReading Mind in the Eyes Test is an Objective Measures of the Extent to Which Verbal Participants With Rudimentary Knowledge of Emotion Names Are Able to Correctly Identify the Emotion Shown in a Black and White Picture of the Eyes and Nose of an Actor.DB w2449.92 percentage of correct responsesStandard Deviation 13.84
Other Pre-specified

Social Responsiveness Scale-2 (SRS-2) Social Motivation Subscale Score

The SRS-Social Motivation subscale was developed to provide a quantitative measure of social impairments typically observed in ASD in children 3-18 years. Reported as T-score with a range of 38-90 for both boys and girls. Higher score indicates more severe clinical condition. Lower value in change indicates more improvement.

Time frame: Open Label: weeks 24, 48

Population: Open Label phase participants

ArmMeasureGroupValue (MEAN)Dispersion
Oxytocin Nasal SpraySocial Responsiveness Scale-2 (SRS-2) Social Motivation Subscale ScoreOpen Label week 2488.5 T-scoreStandard Error 1.37
Oxytocin Nasal SpraySocial Responsiveness Scale-2 (SRS-2) Social Motivation Subscale ScoreOpen Label week 4887.9 T-scoreStandard Error 1.83
Placebo Nasal SpraySocial Responsiveness Scale-2 (SRS-2) Social Motivation Subscale ScoreOpen Label week 2486.6 T-scoreStandard Error 1.37
Placebo Nasal SpraySocial Responsiveness Scale-2 (SRS-2) Social Motivation Subscale ScoreOpen Label week 4883.0 T-scoreStandard Error 1.81

Source: ClinicalTrials.gov · Data processed: Feb 14, 2026