angular material mat radio button unchecked on multiple click

How can I clear <mat-radio-button> selected on second click (after it is already selected)

I know I can implement this behavior with checkbox but i need to allow select only one item.

Any help?

My code look like :

<mat-radio-group name="WasFamilyMemberPresent">
<mat-radio-button *ngFor="let item of lookupNoYes" [value]="item.Code" >
{{item.Desc}}
</mat-radio-button>
</mat-radio-group>

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