MaskRCNN pertained versions other than maskrcnn_resnet50_fpn_coco

Hi,
I would like to change MaskRCNN backbone using resnet (other than resnet50).
When looking at the mask_rcnn.py code (here https://github.com/pytorch/vision/blob/master/torchvision/models/detection/mask_rcnn.py) I see that there is a fully pretrained version for resnet50 with FPN on coco ‘maskrcnn_resnet50_fpn_coco’.
Does it exist other fully pretrained versions for MaskRCNN?
Like for example using resnet101 or even resNext?
Thanks in advance.