E.1 Medical condition or disease under investigation |
E.1.1 | Medical condition(s) being investigated |
There are no medical conditions or diseases under investigation |
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E.1.1.1 | Medical condition in easily understood language |
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E.1.1.2 | Therapeutic area | Not possible to specify |
MedDRA Classification |
E.1.2 Medical condition or disease under investigation |
E.1.2 | Version | 14.1 |
E.1.2 | Level | PT |
E.1.2 | Classification code | 10033329 |
E.1.2 | Term | Oxytocin |
E.1.2 | System Organ Class | 10022891 - Investigations |
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E.1.3 | Condition being studied is a rare disease | No |
E.2 Objective of the trial |
E.2.1 | Main objective of the trial |
Primary objective is to investigate:
- effects of oxytocin on mothers’ and grandmothers’ neural activity related to empathic responding to their (grand)children. We expect oxytocin to decrease activity in brain areas associated with hyperarousal and fear, increase activity in brain regions associated with social cognition, and facilitate empathic responses. We expect changes in brain activity to be related to increases in empathy.
- effects of oxytocin on mothers’ and grandmothers’ neural activity in response to stimuli designed to elicit protective responses; pictures of their own and other (grand)children preceded by a mildly threatening prime. We expect oxytocin to reduce amygdala activation, reflecting reduced arousal and fear thereby promoting adaptive (protective) responding.
- effects of oxytocin on mothers’ and grandmothers’ sensitive responsiveness toward their (grand)children.
- the role of the oxytocin receptor gene in moderating effects of administered oxytocin. |
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E.2.2 | Secondary objectives of the trial |
Secondary objectives are to investigate:
- effects of oxytocin on grandmother-mother interactions.
- the potential relations between the (grand)child’s rejection sensitivity and both mother’s and grandmother’s empathic responding to the child.
- the potential relations between the grandmother’s, mother’s, and child’s level of empathic behavior.
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E.2.3 | Trial contains a sub-study | No |
E.3 | Principal inclusion criteria |
In order to be eligible to participate in this study, a subject must meet all of the following criteria:
-Mothers: female adults having a 6-8 year old child and a mother willing to participate.
-Grandmothers: female adults, whose daughter with a 6-8 year old child is willing to participate.
-Children: 6-8 year old boys and girls.
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E.4 | Principal exclusion criteria |
A potential subject who meets any of the following criteria will be excluded from participation in this study:
-Mothers, grandmothers, and children:
o Any known neurological and (uncorrected) visual impairments
o Psychiatric disorders
-Mothers and grandmothers:
o smoking
o alcohol and drug abuse
o pregnancy
o breastfeeding
o use of medication, except oral contraceptives
o MRI contraindications
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E.5 End points |
E.5.1 | Primary end point(s) |
The main study parameters are:
- Activity in brain areas associated with (hyper)arousal and fearfulness (notably the amygdala), as well as social cognition, attachment, and empathy (e.g., superior temporal cortex, inferior frontal gyrus, fusiform gyrus, insula). We will examine the effects of oxytocin on activity in these areas in both mothers and grandmothers during a priming task designed to elicit protective responses and during a cyberball task designed to elicit empathic responses and behavior. In addition, we will examine whether effects of oxytocin are moderated by the oxytocin receptor genotype.
- Empathic behavior, i.e., compensatory ball throwing to an excluded participant, during the cyberball task. We will examine effects of oxytocin on empathic behavior in both grandmothers and mothers. In addition, we will examine the relation between oxytocin’s effects on empathic behavior and its affects on brain activity during the cyberball task.
- Sensitive responsiveness toward the (grand)child. We will examine effects of oxytocin on both mothers’ and grandmothers’ sensitive responsiveness toward their (grand)child while working at a drawing together with the (grand)child. In addition we will examine whether effects of oxytocin are moderated by the oxytocin receptor genotype. |
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E.5.1.1 | Timepoint(s) of evaluation of this end point |
Participants will come to the laboratory for two identical experimental sessions, seperated by 4 weeks. |
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E.5.2 | Secondary end point(s) |
Secondary study parameters are:
-Interactive behavior of mother and grandmother during a family interaction task (FIT; Allen et al., 2003). We will examine the effects of oxytocin on grandmother-mother interactions. In addition we will examine whether effects of oxytocin are moderated by the oxytocin receptor genotype.
-The child’s empathic behavior and rejection sensitivity. We will investigate potential relations between children’s, mothers’, and grandmothers’ levels of empathic behavior. We will investigate whether children’s rejection sensitivity is related to their mothers’ and grandmothers’ empathic behavior toward them during the cyberball game and to their mothers’ and grandmothers’ sensitive responsiveness toward them (under placebo conditions).
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E.5.2.1 | Timepoint(s) of evaluation of this end point |
Secondary parameters will be assessed during the same two identical experimental sessions, seperated by 4 weeks. |
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E.6 and E.7 Scope of the trial |
E.6 | Scope of the trial |
E.6.1 | Diagnosis | No |
E.6.2 | Prophylaxis | No |
E.6.3 | Therapy | No |
E.6.4 | Safety | No |
E.6.5 | Efficacy | No |
E.6.6 | Pharmacokinetic | No |
E.6.7 | Pharmacodynamic | No |
E.6.8 | Bioequivalence | No |
E.6.9 | Dose response | No |
E.6.10 | Pharmacogenetic | No |
E.6.11 | Pharmacogenomic | No |
E.6.12 | Pharmacoeconomic | No |
E.6.13 | Others | Yes |
E.6.13.1 | Other scope of the trial description |
With the proposed study we aim to gain insight into the effects of oxytocin (OT) on both parents’ and grandparents’ sensitive, empathic, and protective responses to their (grand)children, and in the neural origins of these responses. |
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E.7 | Trial type and phase |
E.7.1 | Human pharmacology (Phase I) | No |
E.7.1.1 | First administration to humans | No |
E.7.1.2 | Bioequivalence study | No |
E.7.1.3 | Other | No |
E.7.1.3.1 | Other trial type description | |
E.7.2 | Therapeutic exploratory (Phase II) | No |
E.7.3 | Therapeutic confirmatory (Phase III) | No |
E.7.4 | Therapeutic use (Phase IV) | Yes |
E.8 Design of the trial |
E.8.1 | Controlled | Yes |
E.8.1.1 | Randomised | Yes |
E.8.1.2 | Open | No |
E.8.1.3 | Single blind | No |
E.8.1.4 | Double blind | Yes |
E.8.1.5 | Parallel group | No |
E.8.1.6 | Cross over | Yes |
E.8.1.7 | Other | No |
E.8.2 | Comparator of controlled trial |
E.8.2.1 | Other medicinal product(s) | No |
E.8.2.2 | Placebo | Yes |
E.8.2.3 | Other | No |
E.8.2.4 | Number of treatment arms in the trial | 2 |
E.8.3 |
The trial involves single site in the Member State concerned
| Yes |
E.8.4 | The trial involves multiple sites in the Member State concerned | No |
E.8.5 | The trial involves multiple Member States | No |
E.8.6 Trial involving sites outside the EEA |
E.8.6.1 | Trial being conducted both within and outside the EEA | No |
E.8.6.2 | Trial being conducted completely outside of the EEA | No |
E.8.7 | Trial has a data monitoring committee | No |
E.8.8 |
Definition of the end of the trial and justification where it is not the last
visit of the last subject undergoing the trial
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Last visit of the last subject undergoing the trial. |
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E.8.9 Initial estimate of the duration of the trial |
E.8.9.1 | In the Member State concerned years | 1 |
E.8.9.1 | In the Member State concerned months | 0 |
E.8.9.1 | In the Member State concerned days | 0 |